Horizon Show Summary and Episode Guide. Is Horizon Renewed or Cancelled?

Season 56 Episodes
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- 56 1 Clean Eating - The Dirty Truth 19th Jan '17 - 9:00pm AIRED
- 56 2 Hair Care Secrets 23rd Jan '17 - 9:00pm AIRED
- 56 3 ADHD and Me with Rory Bremner 25th Apr '17 - 9:00pm AIRED
- 56 4 Why Did I Go Mad? 2nd May '17 - 9:00pm AIRED
- 56 5 Strange Signals From Outer Space! 16th May '17 - 9:00pm AIRED
- 56 6 Space Volcanoes 23rd May '17 - 9:00pm AIRED
- 56 7 Antarctica - Ice Station Rescue 7th Jun '17 - 9:00pm AIRED
- 56 8 Cyber Attack - The Day the NHS Stopped 12th Jun '17 - 9:00pm AIRED
- 56 9 10 Things You Need to Know About the Future 19th Jun '17 - 9:00pm AIRED
- 56 10 Dawn of the Driverless Car 29th Jun '17 - 9:00pm AIRED
- 56 11 Dippy and the Whale 13th Jul '17 - 9:00pm AIRED
- 56 12 What Makes a Psychopath? 29th Aug '17 - 9:00pm AIRED
- 56 13 Mars - A Traveller's Guide 12th Sep '17 - 9:00pm AIRED
- 56 14 Goodbye Cassini - Hello Saturn 18th Sep '17 - 9:00pm AIRED
- 56 15 Being Transgender 26th Sep '17 - 9:00pm AIRED

Season 55 Episodes
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- 55 1 The Immortalist 16th Mar '16 - 9:00pm AIRED
- 55 2 Project Greenglow 23rd Mar '16 - 9:00pm AIRED
- 55 3 The Mystery of Dark Energy 30th Mar '16 - 9:00pm AIRED
- 55 4 Oceans of the Solar System 6th Apr '16 - 9:00pm AIRED
- 55 5 The End of The Solar System 13th Apr '16 - 9:00pm AIRED
- 55 6 How to Find Love Online 25th Apr '16 - 9:00pm AIRED
- 55 7 Ice Station Antarctica 2nd May '16 - 9:00pm AIRED
- 55 8 Curing Alzheimer's 11th May '16 - 9:00pm AIRED
- 55 9 E-cigarettes: Miracle or Menace? 22nd May '16 - 9:00pm AIRED
- 55 10 Why Are We Getting So Fat? 7th Jun '16 - 9:00pm AIRED
- 55 11 Doping 19th Jul '16 - 9:00pm AIRED
- 55 12 Inside CERN 10th Aug '16 - 9:00pm AIRED
- 55 13 My Amazing Twin 25th Aug '16 - 9:00pm AIRED
- 55 14 Jimmy Carr And The Science Of Laughter 11th Sep '16 - 9:00pm AIRED
- 55 15 The Lost Tribes of Humanity 12th Oct '16 - 9:00pm AIRED
- 55 16 The Wildest Weather in the Universe 23rd Oct '16 - 9:00pm AIRED

Season 54 Episodes
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- 54 1 What's The Right Diet For You? 12th Jan '15 - 9:00pm AIRED
- 54 2 What's The Right Diet For You? (2) 13th Jan '15 - 9:00pm AIRED
- 54 3 What's The Right Diet For You? (3) 14th Jan '15 - 9:00pm AIRED
- 54 4 Secrets of the Solar System 3rd Mar '15 - 9:00pm AIRED
- 54 5 Aftershock 10th Mar '15 - 9:00pm AIRED
- 54 6 Dancing in the Dark 17th Mar '15 - 9:00pm AIRED
- 54 7 70 Million Animal Mummies: Egypt's Dark Secret 11th May '15 - 9:00pm AIRED
- 54 8 Is Binge Drinking Really That Bad? 20th May '15 - 9:00pm AIRED
- 54 9 The Truth with Space Junk 5th Aug '15 - 9:00pm AIRED
- 54 10 Are Health Tests Really A Good Idea? 12th Aug '15 - 9:00pm AIRED
- 54 11 First Britons 19th Aug '15 - 9:00pm AIRED
- 54 12 OCD: A Monster in My Mind 26th Aug '15 - 9:00pm AIRED
- 54 13 Which Universe are We In? 2nd Sep '15 - 9:00pm AIRED
- 54 14 Cosmic Dawn: The Real Moment of Creation 9th Sep '15 - 9:00pm AIRED
- 54 15 Are Video Games Really That Bad? 16th Sep '15 - 9:00pm AIRED

Season 53 Episodes
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- 53 1 Sugar v Fat 29th Jan '14 - 9:00pm AIRED
- 53 2 Swallowed by a Sink Hole 3rd Feb '14 - 9:00pm AIRED
- 53 3 Man on Mars 10th Feb '14 - 9:00pm AIRED
- 53 4 The Power of the Placebo 17th Feb '14 - 9:00pm AIRED
- 53 5 How You Really Make Decisions 24th Feb '14 - 9:00pm AIRED
- 53 6 Living with Autism 3rd Mar '14 - 9:00pm AIRED
- 53 7 50th Anniversary 22nd May '14 - 9:00pm AIRED
- 53 8 Where Is Flight MH370? 17th Jun '14 - 9:00pm AIRED
- 53 9 What's Wrong with Our Weather? 17th Jul '14 - 9:00pm AIRED
- 53 10 Should I Eat Meat? Part One 18th Aug '14 - 9:00pm AIRED
- 53 11 Should I Eat Meat? Part Two 20th Aug '14 - 9:00pm AIRED
- 53 12 Allergies 27th Aug '14 - 9:00pm AIRED
- 53 13 Inside the Dark Web 3rd Sep '14 - 9:00pm AIRED
- 53 14 Ebola 10th Sep '14 - 9:00pm AIRED
- 53 15 Is Your Brain Male or Female? 29th Sep '14 - 9:00pm AIRED

Season 52 Episodes
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- 52 1 The Truth About Meteors: A Horizon Special 3rd Mar '13 - 9:00pm AIRED
- 52 2 The Creative Brain: How Insight Works 14th Mar '13 - 9:00pm AIRED
- 52 3 How to Avoid Mistakes in Surgery 21st Mar '13 - 9:00pm AIRED
- 52 5 Mend Me: A Horizon Guide to Transplants 27th Mar '13 - 9:00pm AIRED
- 52 4 The Truth About Taste 28th Mar '13 - 9:00pm AIRED
- 52 6 The Age of Big Data 4th Apr '13 - 9:00pm AIRED
- 52 7 Tomorrow's World 11th Apr '13 - 9:00pm AIRED
- 52 8 The Secret Life of the Cat 13th Jun '13 - 9:00pm AIRED
- 52 9 Little Cat Diaries 14th Jun '13 - 9:00pm AIRED
- 52 10 Fracking 19th Jun '13 - 9:00pm AIRED
- 52 11 Swallowed by a Black Hole 26th Jun '13 - 9:00pm AIRED
- 52 12 What Makes Us Human? 3rd Jul '13 - 9:00pm AIRED
- 52 13 The Truth About Personality 10th Jul '13 - 9:00pm AIRED
- 52 14 What's Killing Our Bees 2nd Aug '13 - 9:00pm AIRED
- 52 15 Monitor Me 12th Aug '13 - 9:00pm AIRED
- 52 16 Defeating the Hackers 19th Aug '13 - 9:00pm AIRED
- 52 17 Dinosaurs 26th Aug '13 - 9:00pm AIRED
- 52 18 Comet of the Century 23rd Nov '13 - 9:00pm AIRED

Season 51 Episodes
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- 51 1 The Truth About Looking Young 23rd Jul '12 - 9:00pm AIRED
- 51 2 Curiosity 30th Jul '12 - 9:00pm AIRED
- 51 3 Eat, Fast and Live Longer 6th Aug '12 - 9:00pm AIRED
- 51 4 How Big Is the Universe? 27th Aug '12 - 9:00pm AIRED
- 51 5 How Small Is the Universe? 3rd Sep '12 - 9:00pm AIRED
- 51 6 Antibiotics 10th Sep '12 - 9:00pm AIRED
- 51 0 Mission to Mars 27th Sep '12 - 11:20pm AIRED

Season 50 Episodes
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- 50 1 Do You See What I See? 8th Aug '11 - 9:00pm AIRED
- 50 2 Stars & Telescopes 15th Aug '11 - 9:00pm AIRED
- 50 3 The Nine Months that Made You 22nd Aug '11 - 9:00pm AIRED
- 50 4 The Core 31st Aug '11 - 9:00pm AIRED
- 50 5 Are You Good or Evil? 7th Sep '11 - 9:00pm AIRED
- 50 6 Fukushima: Is Nuclear Power Safe? 14th Sep '11 - 9:00pm AIRED
- 50 7 Playing God 17th Jan '12 - 9:00pm AIRED
- 50 8 The Truth About Exercise 28th Feb '12 - 9:00pm AIRED
- 50 9 Solar Storms: The Threat to Planet Earth 6th Mar '12 - 9:00pm AIRED
- 50 10 Out of Control? 13th Mar '12 - 9:00pm AIRED
- 50 11 The Truth About Fat 20th Mar '12 - 9:00pm AIRED
- 50 12 Global Weirding 27th Mar '12 - 9:00pm AIRED
- 50 13 The Hunt for AI 3rd Apr '12 - 9:00pm AIRED
- 50 14 Defeating Cancer 10th Apr '12 - 9:00pm AIRED

Season 49 Episodes
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- 49 1 Back from the Dead 27th Sep '10 - 9:00pm AIRED
- 49 2 The Death of the Oceans? 4th Oct '10 - 9:00pm AIRED
- 49 3 What Happened Before the Big Bang? 11th Oct '10 - 9:00pm AIRED
- 49 4 Is Seeing Believing? 18th Oct '10 - 9:00pm AIRED
- 49 5 A Miracle Cure? A Decade of the Human Genome 25th Oct '10 - 9:00pm AIRED
- 49 6 Asteroids 3rd Nov '10 - 9:00pm AIRED
- 49 7 Deepwater Disaster: The Untold Story 16th Nov '10 - 9:00pm AIRED
- 49 8 What is One Degree? 10th Jan '11 - 9:00pm AIRED
- 49 9 What Is Reality? 17th Jan '11 - 9:00pm AIRED
- 49 10 Science Under Attack 24th Jan '11 - 9:00pm AIRED
- 49 11 The Secret World of Pain 31st Jan '11 - 9:00pm AIRED
- 49 12 Surviving a Car Crash 7th Feb '11 - 9:00pm AIRED
- 49 13 How to Mend a Broken Heart 14th Feb '11 - 9:00pm AIRED
- 49 14 Are We Still Evolving? 1st Mar '11 - 9:00pm AIRED
- 49 15 Predators in the Backyard 8th Mar '11 - 9:00pm AIRED

Season 48 Episodes
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- 48 1 Do I Drink too Much? 13th Oct '09 - 9:00pm AIRED
- 48 2 The Secret You 20th Oct '09 - 9:00pm AIRED
- 48 3 Fix Me 27th Oct '09 - 9:00pm AIRED
- 48 4 Who's Afraid of a Big Black Hole? 3rd Nov '09 - 9:00pm AIRED
- 48 5 Why Do We Talk? 10th Nov '09 - 9:00pm AIRED
- 48 6 How Long is a Piece of String? 17th Nov '09 - 9:00pm AIRED
- 48 7 How Many People Can Live on Planet Earth? 9th Dec '09 - 9:00pm AIRED
- 48 8 The Secret Life of the Dog 6th Jan '10 - 9:00pm AIRED
- 48 9 Why Do Viruses Kill? 13th Jan '10 - 9:00pm AIRED
- 48 10 Pill Poppers 20th Jan '10 - 9:00pm AIRED
- 48 11 Don't Grow Old 3rd Feb '10 - 9:00pm AIRED
- 48 12 To Infiity and Beyond 10th Feb '10 - 9:00pm AIRED
- 48 13 What Makes a Genius? 17th Feb '10 - 9:00pm AIRED
- 48 14 Did Cooking Make Us Human? 2nd Mar '10 - 9:00pm AIRED
- 48 15 Is Everything We Know About The Universe Wrong? 9th Mar '10 - 9:00pm AIRED

Season 47 Episodes
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- 47 1 Why Are Thin People Not Fat? 26th Jan '09 - 9:00pm AIRED
- 47 2 Cannabis: The Evil Weed? 3rd Feb '09 - 9:00pm AIRED
- 47 3 Why Do We Dream? 10th Feb '09 - 9:00pm AIRED
- 47 4 Can We Make a Star on Earth? 17th Feb '09 - 9:00pm AIRED
- 47 5 The Secret Life of Your Bodyclock 24th Feb '09 - 9:00pm AIRED
- 47 6 What's the Problem with Nudity? 3rd Mar '09 - 9:00pm AIRED
- 47 7 How to Survive a Disaster 10th Mar '09 - 9:00pm AIRED
- 47 8 Who Do You Want Your Child to Be? 17th Mar '09 - 9:00pm AIRED
- 47 9 Why Can't We Predict Earthquakes? 24th Mar '09 - 9:00pm AIRED
- 47 10 Alan and Marcus Go Forth and Multiply 31st Mar '09 - 9:00pm AIRED
- 47 11 How Violent Are You? 12th May '09 - 9:00pm AIRED
- 47 12 Mars: A Horizon Guide 19th May '09 - 9:00pm AIRED

Season 46 Episodes
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- 46 1 How Mad Are You? 11th Nov '08 - 9:00pm AIRED
- 46 2 How Mad Are You? 18th Nov '08 - 9:00pm AIRED
- 46 3 Jimmy's GM Food Fight 25th Nov '08 - 9:00pm AIRED
- 46 4 Do You Know What Time It Is? 2nd Dec '08 - 9:00pm AIRED
- 46 5 Allergy Planet 9th Dec '08 - 9:00pm AIRED
- 46 6 Where's My Robot 16th Dec '08 - 9:00pm AIRED

Season 45 Episodes
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- 45 1 How to Kill a Human Being 15th Jan '08 - 9:00pm AIRED
- 45 2 Total Isolation 22nd Jan '08 - 9:00pm AIRED
- 45 3 What On Earth Is Wrong With Gravity? 29th Jan '08 - 9:00pm AIRED
- 45 4 Britain's Most Dangerous Drug 5th Feb '08 - 9:00pm AIRED
- 45 5 How to Make Better Decisions 12th Feb '08 - 9:00pm AIRED
- 45 6 How to Live to be 101 19th Feb '08 - 9:00pm AIRED
- 45 7 Professor Regan's Supermarket Trolley 26th Feb '08 - 9:00pm AIRED
- 45 8 Are we Alone in the Universe? 4th Mar '08 - 9:00pm AIRED
- 45 9 How Much is Your Dead Body Worth? 18th Mar '08 - 9:00pm AIRED
- 45 10 How Does Your Memory Work? 25th Mar '08 - 9:00pm AIRED

Season 44 Episodes
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- 44 1 My Pet Dinosaur 13th Mar '07 - 9:00pm AIRED
- 44 2 The Elephant's Guide To Sex 20th Mar '07 - 9:00pm AIRED
- 44 3 Prof Regan's Beauty Palour 27th Mar '07 - 9:00pm AIRED
- 44 4 Mad But Glad 3rd Apr '07 - 9:00pm AIRED
- 44 5 Moon For Sale 10th Apr '07 - 9:00pm AIRED
- 44 6 Battle Of The Brains 17th Apr '07 - 9:00pm AIRED
- 44 7 Skyscraper Fire Fighters 24th Apr '07 - 9:00pm AIRED
- 44 8 Six Billion Dollar Experiment 1st May '07 - 9:00pm AIRED
- 44 9 How To Commit The Perfect Murder 8th May '07 - 9:00pm AIRED

Season 43 Episodes
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- 43 1 Survivors Guide to Plane Crashes 3rd Oct '06 - 9:00pm AIRED
- 43 2 Chimps are People too 10th Oct '06 - 9:00pm AIRED
- 43 3 The World's first Face Transplant 17th Oct '06 - 9:00pm AIRED
- 43 4 Human v2.0 24th Oct '06 - 9:00pm AIRED
- 43 5 The Great Robot Race 31st Oct '06 - 9:00pm AIRED
- 43 6 Pandemic 7th Nov '06 - 9:00pm AIRED
- 43 7 We Are the Aliens 14th Nov '06 - 9:00pm AIRED
- 43 8 Doctors in the Death Zone Part 1 21st Nov '06 - 9:00pm AIRED
- 43 9 Doctors in the Death Zone Part 2 28th Nov '06 - 9:00pm AIRED

Season 42 Episodes
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- 42 1 The Woman Who Thinks Like a Cow 8th Jun '06 - 9:00pm AIRED
- 42 2 The Genius Sperm Bank 15th Jun '06 - 9:00pm AIRED
- 42 3 Bye Bye Planet Pluto 22nd Jun '06 - 9:00pm AIRED
- 42 4 We Love Cigarettes 29th Jun '06 - 9:00pm AIRED
- 42 5 Nuclear Nightmares 13th Jul '06 - 9:00pm AIRED
- 42 6 Tutankhamun's Fireball 20th Jul '06 - 9:00pm AIRED
- 42 7 The Life and Times of El Nino 27th Jul '06 - 9:00pm AIRED

Season 41 Episodes
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- 41 10 Space Tourists 12th Jan '06 - 9:00pm AIRED
- 41 11 Waiting for a Heartbeat 19th Jan '06 - 9:00pm AIRED
- 41 12 A War on Science 26th Jan '06 - 9:00pm AIRED
- 41 13 The Lost City of New Orleans 2nd Feb '06 - 9:00pm AIRED
- 41 14 Most of Our Universe Is Missing 9th Feb '06 - 9:00pm AIRED
- 41 16 The Lost Civilisation of Peru 25th Mar '06 - 9:00pm AIRED
- 41 17 The Next Megaquake 1st Apr '06 - 9:00pm AIRED
- 41 18 Does The MMR Jab Cause Autism 8th Apr '06 - 9:00pm AIRED
- 41 1 Tsunami: Naming The Dead 15th Apr '06 - 9:00pm AIRED
- 41 2 The Hawking Paradox 22nd Apr '06 - 9:00pm AIRED
- 41 3 The Mystery of the Human Hobbit 29th Apr '06 - 9:00pm AIRED
- 41 4 The Doctor Who Makes People Walk Again 6th May '06 - 9:00pm AIRED
- 41 5 Could Fish Make My Child Smart 13th May '06 - 9:00pm AIRED

Season 40 Episodes
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- 40 2 Global Dimming 28th Oct '04 - 9:00pm AIRED
- 40 1 King Solomon's Tablet Of Stone 1st Jan '05 - 9:00pm AIRED
- 40 3 Einstein's Equation of Life and Death 5th Mar '05 - 9:00pm AIRED
- 40 4 Madagascar: A Treetop Odyssey 2nd Apr '05 - 9:00pm AIRED
- 40 5 Malaria: Defeating The Curse 6th May '05 - 9:00pm AIRED
- 40 6 Neanderthal 3rd Jun '05 - 9:00pm AIRED
- 40 7 The 7-7 Bombers: A Psychological Investigation 6th Jul '05 - 9:00pm AIRED
- 40 8 Titan: A Place Like Home 3rd Aug '05 - 9:00pm AIRED
- 40 9 Who's Afraid of Designer Babies 1st Sep '05 - 9:00pm AIRED
- 40 10 Einstein's Unfinished Symphony 5th Oct '05 - 9:00pm AIRED
- 40 11 Einstein's Equation of Life and Death 4th Nov '05 - 9:00pm AIRED
- 40 12 Living with ADHD 5th Dec '05 - 9:00pm AIRED
- 40 13 An Experiment to Save The World 12th Dec '05 - 9:00pm AIRED

Season 39 Episodes
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- 39 1 Demonic Ape 8th Jan '04 - 9:00pm AIRED
- 39 2 The Moscow Theatre Siege 15th Jan '04 - 9:00pm AIRED
- 39 3 The Atkins Diet 22nd Jan '04 - 9:00pm AIRED
- 39 4 Secrets of the Star Disc 29th Jan '04 - 9:00pm AIRED
- 39 5 The Dark Secret of Hendrik Sch?n 5th Feb '04 - 9:00pm AIRED
- 39 6 Thalidomide: A Second Chance 12th Feb '04 - 9:00pm AIRED
- 39 39 The Diamond Labs 4th Mar '04 - 9:00pm AIRED
- 39 7 T-Rex: Warrior or Wimp? 11th Mar '04 - 9:00pm AIRED
- 39 8 Project Poltergeist 18th Mar '04 - 9:00pm AIRED
- 39 9 The Truth of Troy 25th Mar '04 - 9:00pm AIRED
- 39 10 The Truth About Vitamins 16th Sep '04 - 9:00pm AIRED
- 39 11 Derek Tastes of Earwax 16th Sep '04 - 9:00pm AIRED
- 39 12 What Really Killed the Dinosaurs? 7th Oct '04 - 9:00pm AIRED
- 39 13 Saturn: Lord of the Rings 21st Oct '04 - 9:00pm AIRED
- 39 14 The Hunt for the Supertwister 28th Oct '04 - 9:00pm AIRED
- 39 15 Dr Money and the Boy with No Penis 4th Nov '04 - 9:00pm AIRED

Season 38 Episodes
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- 38 1 Helike 10th Jan '02 - 9:00pm AIRED
- 38 2 Volcano Hell 17th Jan '02 - 9:00pm AIRED
- 38 3 Fatbusters 24th Jan '02 - 9:00pm AIRED
- 38 4 The Lost Pyramids of Caral 31st Jan '02 - 9:00pm AIRED
- 38 5 Death of the Iceman 7th Feb '02 - 9:00pm AIRED
- 38 6 Parallel Universes 14th Feb '02 - 9:00pm AIRED
- 38 7 The Dinosaur that Fooled the World 21st Feb '02 - 9:00pm AIRED
- 38 8 Fall of the World Trade Centre 7th Mar '02 - 9:00pm AIRED
- 38 9 Archimedes' Secret 14th Mar '02 - 9:00pm AIRED
- 38 10 The Mystery of the Jurassic 28th Mar '02 - 9:00pm AIRED
- 38 11 Killer Lakes 4th Apr '02 - 9:00pm AIRED
- 38 12 The A6 Murder 16th May '02 - 9:00pm AIRED
- 38 13 The England Patient 23rd May '02 - 9:00pm AIRED
- 38 14 Freak Wave 14th Nov '02 - 9:00pm AIRED
- 38 15 Stone Age Columbus 21st Nov '02 - 9:00pm AIRED
- 38 16 Homeopathy: The Test 26th Nov '02 - 9:00pm AIRED
- 38 17 The Day the Earth Nearly Died 5th Dec '02 - 9:00pm AIRED
- 38 18 Secret of El Dorado 19th Dec '02 - 9:00pm AIRED
- 38 19 The Mystery of Easter Island 9th Jan '03 - 9:00pm AIRED
- 38 20 Living Nightmare 16th Jan '03 - 9:00pm AIRED
- 38 21 Averting Armageddon 23rd Jan '03 - 9:00pm AIRED
- 38 22 Dirty Bomb 30th Jan '03 - 9:00pm AIRED
- 38 23 Sexual Chemistry 13th Feb '03 - 9:00pm AIRED
- 38 24 The Day We Learned to Think 20th Feb '03 - 9:00pm AIRED
- 38 25 Trial and Error 27th Feb '03 - 9:00pm AIRED
- 38 26 Earthquake Storms 6th Mar '03 - 9:00pm AIRED
- 38 27 The Secret Lives of Caves 3rd Apr '03 - 9:00pm AIRED
- 38 28 God on the Brain 17th Apr '03 - 9:00pm AIRED
- 38 29 Flight 587 8th May '03 - 9:00pm AIRED
- 38 30 SARS: The True Story 29th May '03 - 9:00pm AIRED
- 38 31 The Big Chill 13th Nov '03 - 9:00pm AIRED
- 38 32 Bible Code 20th Nov '03 - 9:00pm AIRED
- 38 33 Last Flight of the Columbia 27th Nov '03 - 9:00pm AIRED
- 38 34 The Hunt for the AIDS Vaccine 4th Dec '03 - 9:00pm AIRED
- 38 35 Perry Pilcher's Flying Machine 11th Dec '03 - 9:00pm AIRED
- 38 36 Time Trip 18th Dec '03 - 9:00pm AIRED

Season 37 Episodes
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- 37 1 Life on Mars 11th Jan '01 - 9:00pm AIRED
- 37 2 Destination Mars 18th Jan '01 - 9:00pm AIRED
- 37 3 The Mystery of the Miami Circle 25th Jan '01 - 9:00pm AIRED
- 37 4 The Missing Link 1st Feb '01 - 9:00pm AIRED
- 37 5 Killer Algae 8th Feb '01 - 9:00pm AIRED
- 37 6 Ecstasy and Agony 15th Feb '01 - 9:00pm AIRED
- 37 7 Snowball Earth 22nd Feb '01 - 9:00pm AIRED
- 37 8 Taming the Problem Child 8th Mar '01 - 9:00pm AIRED
- 37 9 What Sank the Kursk? 8th Aug '01 - 9:00pm AIRED
- 37 10 The Mystery of the Persian Mummy 20th Sep '01 - 9:00pm AIRED
- 37 11 The Ape That Took Over the World 4th Oct '01 - 9:00pm AIRED
- 37 12 Life Blood 11th Oct '01 - 9:00pm AIRED
- 37 13 The Death Star 18th Oct '01 - 9:00pm AIRED
- 37 14 Cloning the First Human 25th Oct '01 - 9:00pm AIRED

Season 36 Episodes
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Mark S36 as Watched
- 36 1 Season 36, Episode 01 4th Jan '00 - 9:00pm AIRED
- 36 2 Season 36, Episode 02 5th Jan '00 - 9:00pm AIRED
- 36 3 Season 36, Episode 03 6th Jan '00 - 9:00pm AIRED
- 36 4 Breath of Life 13th Jan '00 - 9:00pm AIRED
- 36 5 The Lost City of Nasca 20th Jan '00 - 9:00pm AIRED
- 36 6 The Diamond Makers 27th Jan '00 - 9:00pm AIRED
- 36 7 Supervolcanoes 3rd Feb '00 - 9:00pm AIRED
- 36 8 Miracle in Orbit 10th Feb '00 - 9:00pm AIRED
- 36 9 Complete Obsession 17th Feb '00 - 9:00pm AIRED
- 36 11 Is GM Safe? 9th Mar '00 - 9:00pm AIRED
- 36 13 Planet Hunters 16th Mar '00 - 9:00pm AIRED
- 36 12 Planet Hunters Part I 16th Mar '00 - 9:00pm AIRED
- 36 14 Moon Children 4th Apr '00 - 9:00pm AIRED
- 36 15 Conjoined Twins 19th Oct '00 - 9:00pm AIRED
- 36 16 The Lost World of Lake Vostok 26th Oct '00 - 9:00pm AIRED
- 36 17 Vanished: The Plane That Disappeared 2nd Nov '00 - 9:00pm AIRED
- 36 18 Secret Treasures of Zeugma 9th Nov '00 - 9:00pm AIRED
- 36 19 The Valley of Life or Death 16th Nov '00 - 9:00pm AIRED
- 36 20 Extreme Dinosaurs 23rd Nov '00 - 9:00pm AIRED
- 36 21 Supermassive Black Holes 30th Nov '00 - 9:00pm AIRED
- 36 22 Boy Who Was Turned Into a Girl 7th Dec '00 - 9:00pm AIRED

Season 35 Episodes
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- 35 1 Atlantis Uncovered 28th Oct '99 - 9:00pm AIRED
- 35 2 Atlantis Reborn 4th Nov '99 - 9:00pm AIRED
- 35 3 Mistaken Identity 11th Nov '99 - 9:00pm AIRED
- 35 4 Volcanoes of the Deep 18th Nov '99 - 9:00pm AIRED
- 35 5 Anatomy of an Avalanche 25th Nov '99 - 9:00pm AIRED
- 35 6 The Midas Formula 2nd Dec '99 - 9:00pm AIRED
- 35 7 Season 35, Episode 07 9th Dec '99 - 9:00pm AIRED

Season 34 Episodes
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- 34 1 Season 34, Episode 01 1st Jan '98 - 9:00pm AIRED
- 34 2 Season 34, Episode 02 1st Feb '98 - 9:00pm AIRED
- 34 3 Season 34, Episode 03 1st Mar '98 - 9:00pm AIRED
- 34 4 Psychedelic Science 12th Apr '98 - 9:00pm AIRED
- 34 5 Season 34, Episode 05 1st May '98 - 9:00pm AIRED
- 34 6 Season 34, Episode 06 1st Jun '98 - 9:00pm AIRED
- 34 7 Season 34, Episode 07 1st Jul '98 - 9:00pm AIRED
- 34 8 Season 34, Episode 08 1st Aug '98 - 9:00pm AIRED
- 34 9 Season 34, Episode 09 1st Sep '98 - 9:00pm AIRED
- 34 10 The Gulf War Jigsaw 16th Sep '98 - 9:00pm AIRED
- 34 11 Season 34, Episode 10 1st Oct '98 - 9:00pm AIRED
- 34 12 Season 34, Episode 11 1st Nov '98 - 9:00pm AIRED
- 34 13 Season 34, Episode 12 1st Dec '98 - 9:00pm AIRED

Season 33 Episodes
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- 33 1 Antarctica 1st Jan '97 - 9:00pm AIRED
- 33 2 Dawn of The Clone Age 1st Feb '97 - 9:00pm AIRED
- 33 13 Psychedelic Science By Bill Eagles 27th Feb '97 - 9:00pm AIRED
- 33 3 Fermat's Last Theorem 1st Mar '97 - 9:00pm AIRED
- 33 4 The Man Who Lost His Body 1st Apr '97 - 9:00pm AIRED
- 33 5 Out of Asia 1st May '97 - 9:00pm AIRED
- 33 6 Season 33, Episode 06 1st Jun '97 - 9:00pm AIRED
- 33 7 Season 33, Episode 07 1st Jul '97 - 9:00pm AIRED
- 33 9 Season 33, Episode 09 1st Aug '97 - 9:00pm AIRED
- 33 8 Season 33, Episode 08 1st Aug '97 - 9:00pm AIRED
- 33 10 Season 33, Episode 10 1st Oct '97 - 9:00pm AIRED
- 33 11 Season 33, Episode 11 1st Nov '97 - 9:00pm AIRED
- 33 12 Season 33, Episode 12 1st Dec '97 - 9:00pm AIRED

Season 32 Episodes
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Mark S32 as Watched
- 32 2 Einstein: Miracle Year 12th Jan '96 - 9:00pm AIRED
- 32 3 Noah's Flood 1st Mar '96 - 9:00pm AIRED
- 32 4 Molecules with Sunglasses 1st Apr '96 - 9:00pm AIRED
- 32 5 The Time Lords 1st May '96 - 9:00pm AIRED
- 32 6 Ice Mummies Part 1 1st Jun '96 - 9:00pm AIRED
- 32 7 Ice Mummies Part 2 1st Jul '96 - 9:00pm AIRED
- 32 8 Ice Mummies Part 3 1st Aug '96 - 9:00pm AIRED
- 32 9 Turned On By Danger 1st Sep '96 - 9:00pm AIRED
- 32 1 Fallout From Chernobyl 16th Sep '96 - 9:00pm AIRED
- 32 10 Season 32, Episode 10 1st Oct '96 - 9:00pm AIRED
- 32 11 Season 32, Episode 11 1st Nov '96 - 9:00pm AIRED
- 32 12 Season 32, Episode 12 1st Dec '96 - 9:00pm AIRED

Season 31 Episodes
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Mark S31 as Watched
- 31 1 Season 31, Episode 01 1st Jan '95 - 9:00pm AIRED
- 31 2 Season 31, Episode 02 1st Feb '95 - 9:00pm AIRED
- 31 12 Farewell Fantastic Venus 27th Feb '95 - 9:00pm AIRED
- 31 3 Season 31, Episode 03 1st Mar '95 - 9:00pm AIRED
- 31 4 Season 31, Episode 04 1st Apr '95 - 9:00pm AIRED
- 31 17 Foetal Attraction 3rd Apr '95 - 9:00pm AIRED
- 31 5 Season 31, Episode 05 1st May '95 - 9:00pm AIRED
- 31 6 Season 31, Episode 06 1st Jun '95 - 9:00pm AIRED
- 31 7 Season 31, Episode 07 1st Jul '95 - 9:00pm AIRED
- 31 8 Season 31, Episode 08 1st Aug '95 - 9:00pm AIRED
- 31 9 Season 31, Episode 09 1st Sep '95 - 9:00pm AIRED
- 31 10 Season 31, Episode 10 1st Oct '95 - 9:00pm AIRED
- 31 11 Season 31, Episode 11 1st Nov '95 - 9:00pm AIRED

Season 30 Episodes
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Mark S30 as Watched
- 30 1 Season 30, Episode 01 1st Jan '94 - 9:00pm AIRED
- 30 2 Season 30, Episode 02 1st Feb '94 - 9:00pm AIRED
- 30 3 Season 30, Episode 03 1st Mar '94 - 9:00pm AIRED
- 30 4 Season 30, Episode 04 1st Apr '94 - 9:00pm AIRED
- 30 5 Season 30, Episode 05 1st May '94 - 9:00pm AIRED
- 30 6 Season 30, Episode 06 1st Jun '94 - 9:00pm AIRED
- 30 7 Season 30, Episode 07 1st Jul '94 - 9:00pm AIRED
- 30 8 Season 30, Episode 08 1st Aug '94 - 9:00pm AIRED
- 30 9 Season 30, Episode 09 1st Sep '94 - 9:00pm AIRED
- 30 10 Season 30, Episode 10 1st Oct '94 - 9:00pm AIRED
- 30 11 Season 30, Episode 11 1st Nov '94 - 9:00pm AIRED
- 30 12 Season 30, Episode 12 1st Dec '94 - 9:00pm AIRED

Season 29 Episodes
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Mark S29 as Watched
- 29 1 Season 29, Episode 01 1st Jan '93 - 9:00pm AIRED
- 29 2 Season 29, Episode 02 1st Feb '93 - 9:00pm AIRED
- 29 3 Season 29, Episode 03 1st Mar '93 - 9:00pm AIRED
- 29 4 Season 29, Episode 04 1st Apr '93 - 9:00pm AIRED
- 29 5 Season 29, Episode 05 1st May '93 - 9:00pm AIRED
- 29 6 Season 29, Episode 06 1st Jun '93 - 9:00pm AIRED
- 29 7 Season 29, Episode 07 1st Jul '93 - 9:00pm AIRED
- 29 8 Season 29, Episode 08 1st Aug '93 - 9:00pm AIRED
- 29 9 Season 29, Episode 09 1st Sep '93 - 9:00pm AIRED
- 29 10 Season 29, Episode 10 1st Oct '93 - 9:00pm AIRED
- 29 11 Season 29, Episode 11 1st Nov '93 - 9:00pm AIRED
- 29 12 Season 29, Episode 12 1st Dec '93 - 9:00pm AIRED

Season 28 Episodes
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Mark S28 as Watched
- 28 1 Season 28, Episode 01 1st Jan '92 - 9:00pm AIRED
- 28 2 Season 28, Episode 02 1st Feb '92 - 9:00pm AIRED
- 28 3 Season 28, Episode 03 1st Mar '92 - 9:00pm AIRED
- 28 4 Season 28, Episode 04 1st Apr '92 - 9:00pm AIRED
- 28 5 Season 28, Episode 05 1st May '92 - 9:00pm AIRED
- 28 6 Season 28, Episode 06 1st Jun '92 - 9:00pm AIRED
- 28 7 Season 28, Episode 07 1st Jul '92 - 9:00pm AIRED
- 28 8 Season 28, Episode 08 1st Aug '92 - 9:00pm AIRED
- 28 9 Season 28, Episode 09 1st Sep '92 - 9:00pm AIRED
- 28 10 Season 28, Episode 10 1st Oct '92 - 9:00pm AIRED
- 28 11 Season 28, Episode 11 1st Nov '92 - 9:00pm AIRED
- 28 12 Season 28, Episode 12 1st Nov '92 - 9:00pm AIRED

Season 27 Episodes
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Mark S27 as Watched
- 27 1 Of Big Bangs Stick Men and Galactic Holes 1st Jan '91 - 9:00pm AIRED
- 27 2 Red Star in Orbit: The Invisible Spaceman 1st Feb '91 - 9:00pm AIRED
- 27 3 Red Star in Orbit: The Dark Side of the Moon 1st Mar '91 - 9:00pm AIRED
- 27 4 Red Star in Orbit: The Mission 1st Apr '91 - 9:00pm AIRED
- 27 5 The Curse of Karash 1st May '91 - 9:00pm AIRED
- 27 6 Season 27, Episode 06 1st Jun '91 - 9:00pm AIRED
- 27 7 Season 27, Episode 07 1st Jul '91 - 9:00pm AIRED
- 27 8 Season 27, Episode 08 1st Aug '91 - 9:00pm AIRED
- 27 9 Season 27, Episode 09 1st Sep '91 - 9:00pm AIRED
- 27 10 Season 27, Episode 10 1st Oct '91 - 9:00pm AIRED
- 27 11 Season 27, Episode 11 1st Nov '91 - 9:00pm AIRED
- 27 12 Season 27, Episode 12 1st Dec '91 - 9:00pm AIRED

Season 26 Episodes
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Mark S26 as Watched
- 26 1 Season 26, Episode 01 27th Jan '90 - 9:00pm AIRED
- 26 4 From Earth To Miranda 29th Jan '90 - 9:00pm AIRED
- 26 2 Season 26, Episode 02 24th Feb '90 - 9:00pm AIRED
- 26 3 Season 26, Episode 03 25th Mar '90 - 9:00pm AIRED
- 26 14 The Company Of Ants And Bees 23rd Apr '90 - 9:00pm AIRED
- 26 5 Season 26, Episode 05 6th May '90 - 9:00pm AIRED
- 26 6 Season 26, Episode 06 3rd Jun '90 - 9:00pm AIRED
- 26 7 Season 26, Episode 07 7th Jul '90 - 9:00pm AIRED
- 26 8 Season 26, Episode 08 4th Aug '90 - 9:00pm AIRED
- 26 9 Season 26, Episode 09 1st Sep '90 - 9:00pm AIRED
- 26 11 Season 26, Episode 11 2nd Oct '90 - 9:00pm AIRED
- 26 10 Season 26, Episode 10 5th Oct '90 - 9:00pm AIRED
- 26 12 Season 26, Episode 12 2nd Dec '90 - 9:00pm AIRED

Season 25 Episodes
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Mark S25 as Watched
- 25 2 Season 25, Episode 01 1st Jan '89 - 9:00pm AIRED
- 25 3 Season 25, Episode 02 1st Feb '89 - 9:00pm AIRED
- 25 1 Black Schizophrenia 13th Mar '89 - 9:00pm AIRED
- 25 4 Season 25, Episode 04 1st Apr '89 - 9:00pm AIRED
- 25 5 Season 25, Episode 05 1st May '89 - 9:00pm AIRED
- 25 6 Season 25, Episode 06 1st Jun '89 - 9:00pm AIRED
- 25 7 Season 25, Episode 07 1st Jul '89 - 9:00pm AIRED
- 25 8 Season 25, Episode 08 1st Aug '89 - 9:00pm AIRED
- 25 9 Season 25, Episode 09 1st Sep '89 - 9:00pm AIRED
- 25 10 Season 25, Episode 10 1st Oct '89 - 9:00pm AIRED
- 25 11 Season 25, Episode 11 1st Nov '89 - 9:00pm AIRED
- 25 12 Season 25, Episode 12 1st Dec '89 - 9:00pm AIRED

Season 24 Episodes
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Mark S24 as Watched
- 24 1 Season 24, Episode 01 9th Jan '88 - 9:00pm AIRED
- 24 2 Season 24, Episode 02 6th Feb '88 - 9:00pm AIRED
- 24 3 Season 24, Episode 03 6th Mar '88 - 9:00pm AIRED
- 24 4 Season 24, Episode 04 3rd Apr '88 - 9:00pm AIRED
- 24 5 Season 24, Episode 05 7th May '88 - 9:00pm AIRED
- 24 6 Season 24, Episode 06 4th Jun '88 - 9:00pm AIRED
- 24 7 The Quest for Tannu Tuva 4th Jul '88 - 9:00pm AIRED
- 24 8 Season 24, Episode 08 2nd Aug '88 - 9:00pm AIRED
- 24 9 Season 24, Episode 09 5th Sep '88 - 9:00pm AIRED
- 24 10 Season 24, Episode 10 2nd Oct '88 - 9:00pm AIRED
- 24 11 Season 24, Episode 11 6th Nov '88 - 9:00pm AIRED
- 24 12 Season 24, Episode 12 6th Dec '88 - 9:00pm AIRED

Season 23 Episodes
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Mark S23 as Watched
- 23 1 Nice Guys Finish First by Richard Dawkins 1st Jan '87 - 9:00pm AIRED
- 23 2 Season 23, Episode 02 1st Feb '87 - 9:00pm AIRED
- 23 3 Season 23, Episode 03 1st Mar '87 - 9:00pm AIRED
- 23 4 Season 23, Episode 04 1st Apr '87 - 9:00pm AIRED
- 23 5 Season 23, Episode 05 1st May '87 - 9:00pm AIRED
- 23 9 Season 23, Episode 09 1st Sep '87 - 9:00pm AIRED
- 23 11 Season 23, Episode 11 1st Nov '87 - 9:00pm AIRED
- 23 12 Season 23, Episode 12 1st Dec '87 - 9:00pm AIRED
- 23 6 Season 23, Episode 06 1st Jun '89 - 9:00pm AIRED
- 23 7 Season 23, Episode 07 1st Jul '89 - 9:00pm AIRED
- 23 8 Season 23, Episode 08 1st Aug '89 - 9:00pm AIRED
- 23 10 Season 23, Episode 10 1st Oct '89 - 9:00pm AIRED

Season 22 Episodes
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Mark S22 as Watched
- 22 1 Season 22, Episode 01 1st Jan '86 - 9:00pm AIRED
- 22 2 Season 22, Episode 02 1st Feb '86 - 9:00pm AIRED
- 22 3 Season 22, Episode 03 1st Mar '86 - 9:00pm AIRED
- 22 4 Season 22, Episode 04 1st Apr '86 - 9:00pm AIRED
- 22 5 Season 22, Episode 05 1st May '86 - 9:00pm AIRED
- 22 6 Season 22, Episode 06 1st Jun '86 - 9:00pm AIRED
- 22 7 Season 22, Episode 07 1st Jul '86 - 9:00pm AIRED
- 22 8 Season 22, Episode 08 1st Aug '86 - 9:00pm AIRED
- 22 9 Season 22, Episode 09 1st Sep '86 - 9:00pm AIRED
- 22 10 Season 22, Episode 10 1st Oct '86 - 9:00pm AIRED
- 22 11 Season 22, Episode 11 1st Nov '86 - 9:00pm AIRED
- 22 12 Season 22, Episode 12 1st Dec '86 - 9:00pm AIRED

Season 21 Episodes
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Mark S21 as Watched
- 21 1 Season 21, Episode 01 1st Jan '85 - 9:00pm AIRED
- 21 2 Season 21, Episode 02 1st Feb '85 - 9:00pm AIRED
- 21 3 Season 21, Episode 03 1st Mar '85 - 9:00pm AIRED
- 21 4 Season 21, Episode 04 1st Apr '85 - 9:00pm AIRED
- 21 5 Season 21, Episode 05 1st May '85 - 9:00pm AIRED
- 21 6 Season 21, Episode 06 1st Jun '85 - 9:00pm AIRED
- 21 7 Season 21, Episode 07 1st Jul '85 - 9:00pm AIRED
- 21 8 Season 21, Episode 08 1st Aug '85 - 9:00pm AIRED
- 21 9 Season 21, Episode 09 1st Sep '85 - 9:00pm AIRED
- 21 10 Season 21, Episode 10 1st Oct '85 - 9:00pm AIRED
- 21 11 Season 21, Episode 11 1st Nov '85 - 9:00pm AIRED
- 21 12 Season 21, Episode 12 1st Dec '85 - 9:00pm AIRED

Season 20 Episodes
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Mark S20 as Watched
- 20 1 Unknown 7th Jan '84 - 9:00pm AIRED
- 20 2 Unknown 14th Jan '84 - 9:00pm AIRED
- 20 3 Unknown 21st Jan '84 - 9:00pm AIRED
- 20 4 Unknown 28th Jan '84 - 9:00pm AIRED
- 20 5 Unknown 4th Feb '84 - 9:00pm AIRED
- 20 6 Unknown 11th Feb '84 - 9:00pm AIRED
- 20 7 Unknown 18th Feb '84 - 9:00pm AIRED
- 20 8 Unknown 25th Feb '84 - 9:00pm AIRED
- 20 9 Unknown 4th Mar '84 - 9:00pm AIRED
- 20 10 Unknown 11th Mar '84 - 9:00pm AIRED
- 20 11 Unknown 18th Mar '84 - 9:00pm AIRED
- 20 12 Unknown 25th Mar '84 - 9:00pm AIRED
- 20 13 Unknown 1st Apr '84 - 9:00pm AIRED
- 20 14 Unknown 8th Apr '84 - 9:00pm AIRED
- 20 15 Unknown 15th Apr '84 - 9:00pm AIRED
- 20 16 Unknown 22nd Apr '84 - 9:00pm AIRED
- 20 17 Unknown 29th Apr '84 - 9:00pm AIRED
- 20 19 Unknown 12th May '84 - 9:00pm AIRED
- 20 20 Unknown 19th May '84 - 9:00pm AIRED
- 20 21 Unknown 26th May '84 - 9:00pm AIRED
- 20 22 Unknown 2nd Jun '84 - 9:00pm AIRED
- 20 23 Unknown 9th Jun '84 - 9:00pm AIRED
- 20 24 Unknown 16th Jun '84 - 9:00pm AIRED
- 20 25 Unknown 23rd Jun '84 - 9:00pm AIRED
- 20 26 Unknown 30th Jun '84 - 9:00pm AIRED
- 20 27 Unknown 6th Jul '84 - 9:00pm AIRED
- 20 28 Unknown 13th Jul '84 - 9:00pm AIRED
- 20 29 Unknown 20th Jul '84 - 9:00pm AIRED
- 20 30 Unknown 27th Jul '84 - 9:00pm AIRED
- 20 31 Unknown 3rd Aug '84 - 9:00pm AIRED
- 20 32 Unknown 10th Aug '84 - 9:00pm AIRED
- 20 33 Unknown 17th Aug '84 - 9:00pm AIRED
- 20 34 Unknown 24th Aug '84 - 9:00pm AIRED
- 20 35 Unknown 31st Aug '84 - 9:00pm AIRED
- 20 36 Unknown 7th Sep '84 - 9:00pm AIRED
- 20 37 Unknown 14th Sep '84 - 9:00pm AIRED
- 20 38 Unknown 21st Sep '84 - 9:00pm AIRED
- 20 39 Unknown 28th Sep '84 - 9:00pm AIRED
- 20 40 Unknown 4th Oct '84 - 9:00pm AIRED
- 20 41 Unknown 11th Oct '84 - 9:00pm AIRED
- 20 42 Unknown 18th Oct '84 - 9:00pm AIRED
- 20 43 Unknown 25th Oct '84 - 9:00pm AIRED
- 20 44 Unknown 1st Nov '84 - 9:00pm AIRED
- 20 45 Unknown 8th Nov '84 - 9:00pm AIRED
- 20 46 Unknown 15th Nov '84 - 9:00pm AIRED
- 20 47 Unknown 22nd Nov '84 - 9:00pm AIRED
- 20 48 Unknown 29th Nov '84 - 9:00pm AIRED
- 20 49 Unknown 5th Dec '84 - 9:00pm AIRED
- 20 50 Unknown 12th Dec '84 - 9:00pm AIRED
- 20 51 Unknown 19th Dec '84 - 9:00pm AIRED
- 20 52 Unknown 26th Dec '84 - 9:00pm AIRED

Season 19 Episodes
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Mark S19 as Watched
- 19 1 Unknown 4th Jan '83 - 9:00pm AIRED
- 19 2 Unknown 11th Jan '83 - 9:00pm AIRED
- 19 3 Unknown 18th Jan '83 - 9:00pm AIRED
- 19 4 Unknown 25th Jan '83 - 9:00pm AIRED
- 19 5 Unknown 1st Feb '83 - 9:00pm AIRED
- 19 6 Unknown 8th Feb '83 - 9:00pm AIRED
- 19 7 Unknown 15th Feb '83 - 9:00pm AIRED
- 19 8 Unknown 22nd Feb '83 - 9:00pm AIRED
- 19 9 Unknown 1st Mar '83 - 9:00pm AIRED
- 19 10 Unknown 8th Mar '83 - 9:00pm AIRED
- 19 11 Unknown 15th Mar '83 - 9:00pm AIRED
- 19 12 Unknown 22nd Mar '83 - 9:00pm AIRED
- 19 13 Unknown 29th Mar '83 - 9:00pm AIRED
- 19 14 Unknown 5th Apr '83 - 9:00pm AIRED
- 19 15 Unknown 12th Apr '83 - 9:00pm AIRED
- 19 16 Unknown 19th Apr '83 - 9:00pm AIRED
- 19 17 Unknown 26th Apr '83 - 9:00pm AIRED
- 19 18 Unknown 2nd May '83 - 9:00pm AIRED
- 19 19 Unknown 9th May '83 - 9:00pm AIRED
- 19 20 Unknown 16th May '83 - 9:00pm AIRED
- 19 21 Unknown 23rd May '83 - 9:00pm AIRED
- 19 22 Unknown 30th May '83 - 9:00pm AIRED
- 19 23 Unknown 6th Jun '83 - 9:00pm AIRED
- 19 24 Unknown 13th Jun '83 - 9:00pm AIRED
- 19 25 Unknown 20th Jun '83 - 9:00pm AIRED
- 19 26 Unknown 27th Jun '83 - 9:00pm AIRED
- 19 27 Unknown 3rd Jul '83 - 9:00pm AIRED
- 19 28 Unknown 10th Jul '83 - 9:00pm AIRED
- 19 29 Unknown 17th Jul '83 - 9:00pm AIRED
- 19 30 Unknown 24th Jul '83 - 9:00pm AIRED
- 19 31 Unknown 31st Jul '83 - 9:00pm AIRED
- 19 32 Unknown 7th Aug '83 - 9:00pm AIRED
- 19 33 Unknown 14th Aug '83 - 9:00pm AIRED
- 19 34 Unknown 21st Aug '83 - 9:00pm AIRED
- 19 35 Unknown 28th Aug '83 - 9:00pm AIRED
- 19 36 Unknown 4th Sep '83 - 9:00pm AIRED
- 19 37 Unknown 11th Sep '83 - 9:00pm AIRED
- 19 38 Unknown 18th Sep '83 - 9:00pm AIRED
- 19 39 Unknown 25th Sep '83 - 9:00pm AIRED
- 19 41 Unknown 8th Oct '83 - 9:00pm AIRED
- 19 42 Unknown 15th Oct '83 - 9:00pm AIRED
- 19 43 Unknown 22nd Oct '83 - 9:00pm AIRED
- 19 44 Unknown 29th Oct '83 - 9:00pm AIRED
- 19 45 Unknown 5th Nov '83 - 9:00pm AIRED
- 19 46 Unknown 12th Nov '83 - 9:00pm AIRED
- 19 47 Unknown 19th Nov '83 - 9:00pm AIRED
- 19 48 Unknown 26th Nov '83 - 9:00pm AIRED
- 19 49 Unknown 2nd Dec '83 - 9:00pm AIRED
- 19 50 Unknown 9th Dec '83 - 9:00pm AIRED
- 19 51 Unknown 23rd Dec '83 - 9:00pm AIRED
- 19 52 Unknown 30th Dec '83 - 9:00pm AIRED

Season 18 Episodes
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Mark S18 as Watched
- 18 1 Unknown 2nd Jan '82 - 9:00pm AIRED
- 18 2 Unknown 9th Jan '82 - 9:00pm AIRED
- 18 3 Unknown 16th Jan '82 - 9:00pm AIRED
- 18 4 Unknown 23rd Jan '82 - 9:00pm AIRED
- 18 5 Unknown 30th Jan '82 - 9:00pm AIRED
- 18 6 Unknown 6th Feb '82 - 9:00pm AIRED
- 18 7 Unknown 13th Feb '82 - 9:00pm AIRED
- 18 8 Unknown 20th Feb '82 - 9:00pm AIRED
- 18 9 Unknown 27th Feb '82 - 9:00pm AIRED
- 18 10 Unknown 6th Mar '82 - 9:00pm AIRED
- 18 11 Unknown 13th Mar '82 - 9:00pm AIRED
- 18 12 Unknown 20th Mar '82 - 9:00pm AIRED
- 18 13 Unknown 27th Mar '82 - 9:00pm AIRED
- 18 14 Unknown 3rd Apr '82 - 9:00pm AIRED
- 18 15 Unknown 10th Apr '82 - 9:00pm AIRED
- 18 16 Unknown 17th Apr '82 - 9:00pm AIRED
- 18 17 Unknown 24th Apr '82 - 9:00pm AIRED
- 18 18 Unknown 1st May '82 - 9:00pm AIRED
- 18 19 Unknown 7th May '82 - 9:00pm AIRED
- 18 20 Unknown 14th May '82 - 9:00pm AIRED
- 18 21 Unknown 21st May '82 - 9:00pm AIRED
- 18 22 Unknown 28th May '82 - 9:00pm AIRED
- 18 23 Unknown 4th Jun '82 - 9:00pm AIRED
- 18 24 Unknown 11th Jun '82 - 9:00pm AIRED
- 18 25 Unknown 18th Jun '82 - 9:00pm AIRED
- 18 26 Unknown 25th Jun '82 - 9:00pm AIRED
- 18 27 Unknown 1st Jul '82 - 9:00pm AIRED
- 18 28 Unknown 8th Jul '82 - 9:00pm AIRED
- 18 29 Unknown 15th Jul '82 - 9:00pm AIRED
- 18 30 Unknown 22nd Jul '82 - 9:00pm AIRED
- 18 31 Unknown 29th Jul '82 - 9:00pm AIRED
- 18 32 Unknown 5th Aug '82 - 9:00pm AIRED
- 18 33 Unknown 12th Aug '82 - 9:00pm AIRED
- 18 34 Unknown 19th Aug '82 - 9:00pm AIRED
- 18 35 Unknown 26th Aug '82 - 9:00pm AIRED
- 18 36 Unknown 2nd Sep '82 - 9:00pm AIRED
- 18 37 Unknown 9th Sep '82 - 9:00pm AIRED
- 18 38 Unknown 16th Sep '82 - 9:00pm AIRED
- 18 39 Unknown 23rd Sep '82 - 9:00pm AIRED
- 18 40 Unknown 30th Sep '82 - 9:00pm AIRED
- 18 41 Unknown 6th Oct '82 - 9:00pm AIRED
- 18 42 Unknown 13th Oct '82 - 9:00pm AIRED
- 18 43 Unknown 20th Oct '82 - 9:00pm AIRED
- 18 44 Unknown 27th Oct '82 - 9:00pm AIRED
- 18 45 Unknown 3rd Nov '82 - 9:00pm AIRED
- 18 46 Unknown 10th Nov '82 - 9:00pm AIRED
- 18 47 Unknown 17th Nov '82 - 9:00pm AIRED
- 18 48 Unknown 24th Nov '82 - 9:00pm AIRED
- 18 49 Unknown 1st Dec '82 - 9:00pm AIRED
- 18 50 Unknown 7th Dec '82 - 9:00pm AIRED
- 18 51 Unknown 14th Dec '82 - 9:00pm AIRED
- 18 52 The Mysterious Mr. Tesla 21st Dec '82 - 9:00pm AIRED

Season 17 Episodes
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Mark S17 as Watched
- 17 1 The Pleasure of Finding Things out 7th Jan '81 - 9:00pm AIRED
- 17 2 Unknown 14th Jan '81 - 9:00pm AIRED
- 17 3 Unknown 21st Jan '81 - 9:00pm AIRED
- 17 4 Unknown 28th Jan '81 - 9:00pm AIRED
- 17 5 Unknown 4th Feb '81 - 9:00pm AIRED
- 17 6 Unknown 11th Feb '81 - 9:00pm AIRED
- 17 7 Unknown 18th Feb '81 - 9:00pm AIRED
- 17 8 Unknown 25th Feb '81 - 9:00pm AIRED
- 17 9 Unknown 4th Mar '81 - 9:00pm AIRED
- 17 10 Unknown 11th Mar '81 - 9:00pm AIRED
- 17 11 Unknown 18th Mar '81 - 9:00pm AIRED
- 17 12 Unknown 25th Mar '81 - 9:00pm AIRED
- 17 13 Unknown 1st Apr '81 - 9:00pm AIRED
- 17 14 Unknown 8th Apr '81 - 9:00pm AIRED
- 17 15 Unknown 15th Apr '81 - 9:00pm AIRED
- 17 16 Unknown 22nd Apr '81 - 9:00pm AIRED
- 17 17 Unknown 29th Apr '81 - 9:00pm AIRED
- 17 18 Unknown 5th May '81 - 9:00pm AIRED
- 17 19 Unknown 12th May '81 - 9:00pm AIRED
- 17 20 Unknown 19th May '81 - 9:00pm AIRED
- 17 21 Unknown 26th May '81 - 9:00pm AIRED
- 17 22 Unknown 2nd Jun '81 - 9:00pm AIRED
- 17 23 Unknown 9th Jun '81 - 9:00pm AIRED
- 17 24 Unknown 16th Jun '81 - 9:00pm AIRED
- 17 25 Unknown 23rd Jun '81 - 9:00pm AIRED
- 17 26 Unknown 30th Jun '81 - 9:00pm AIRED
- 17 27 Unknown 6th Jul '81 - 9:00pm AIRED
- 17 28 Unknown 13th Jul '81 - 9:00pm AIRED
- 17 29 Unknown 20th Jul '81 - 9:00pm AIRED
- 17 30 Unknown 27th Jul '81 - 9:00pm AIRED
- 17 31 Unknown 3rd Aug '81 - 9:00pm AIRED
- 17 32 Unknown 10th Aug '81 - 9:00pm AIRED
- 17 33 Unknown 17th Aug '81 - 9:00pm AIRED
- 17 34 Unknown 24th Aug '81 - 9:00pm AIRED
- 17 35 Unknown 31st Aug '81 - 9:00pm AIRED
- 17 36 Unknown 7th Sep '81 - 9:00pm AIRED
- 17 37 Unknown 14th Sep '81 - 9:00pm AIRED
- 17 38 Unknown 21st Sep '81 - 9:00pm AIRED
- 17 39 Unknown 28th Sep '81 - 9:00pm AIRED
- 17 40 Unknown 4th Oct '81 - 9:00pm AIRED
- 17 41 Unknown 11th Oct '81 - 9:00pm AIRED
- 17 42 Unknown 18th Oct '81 - 9:00pm AIRED
- 17 43 Unknown 25th Oct '81 - 9:00pm AIRED
- 17 44 Unknown 1st Nov '81 - 9:00pm AIRED
- 17 45 Unknown 8th Nov '81 - 9:00pm AIRED
- 17 46 Unknown 15th Nov '81 - 9:00pm AIRED
- 17 47 Unknown 22nd Nov '81 - 9:00pm AIRED
- 17 48 Unknown 29th Nov '81 - 9:00pm AIRED
- 17 49 Unknown 5th Dec '81 - 9:00pm AIRED
- 17 50 Unknown 12th Dec '81 - 9:00pm AIRED
- 17 51 Unknown 19th Dec '81 - 9:00pm AIRED
- 17 52 Unknown 26th Dec '81 - 9:00pm AIRED

Season 16 Episodes
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Mark S16 as Watched
- 16 1 Astrology 5th Jan '80 - 9:00pm AIRED
- 16 2 Unknown 12th Jan '80 - 9:00pm AIRED
- 16 3 Unknown 19th Jan '80 - 9:00pm AIRED
- 16 4 Unknown 26th Jan '80 - 9:00pm AIRED
- 16 5 Unknown 2nd Feb '80 - 9:00pm AIRED
- 16 6 Unknown 9th Feb '80 - 9:00pm AIRED
- 16 7 Unknown 16th Feb '80 - 9:00pm AIRED
- 16 8 Unknown 23rd Feb '80 - 9:00pm AIRED
- 16 9 Unknown 2nd Mar '80 - 9:00pm AIRED
- 16 10 Unknown 9th Mar '80 - 9:00pm AIRED
- 16 11 Unknown 16th Mar '80 - 9:00pm AIRED
- 16 12 Unknown 23rd Mar '80 - 9:00pm AIRED
- 16 13 Unknown 30th Mar '80 - 9:00pm AIRED
- 16 14 Unknown 6th Apr '80 - 9:00pm AIRED
- 16 15 Unknown 13th Apr '80 - 9:00pm AIRED
- 16 16 Unknown 20th Apr '80 - 9:00pm AIRED
- 16 17 Unknown 27th Apr '80 - 9:00pm AIRED
- 16 18 Unknown 4th May '80 - 9:00pm AIRED
- 16 19 Unknown 11th May '80 - 9:00pm AIRED
- 16 20 Unknown 18th May '80 - 9:00pm AIRED
- 16 21 Unknown 25th May '80 - 9:00pm AIRED
- 16 22 Unknown 1st Jun '80 - 9:00pm AIRED
- 16 23 Unknown 8th Jun '80 - 9:00pm AIRED
- 16 24 Unknown 15th Jun '80 - 9:00pm AIRED
- 16 25 Unknown 22nd Jun '80 - 9:00pm AIRED
- 16 26 Unknown 29th Jun '80 - 9:00pm AIRED
- 16 27 Unknown 4th Jul '80 - 9:00pm AIRED
- 16 28 Unknown 11th Jul '80 - 9:00pm AIRED
- 16 29 Unknown 18th Jul '80 - 9:00pm AIRED
- 16 30 Unknown 25th Jul '80 - 9:00pm AIRED
- 16 31 Unknown 1st Aug '80 - 9:00pm AIRED
- 16 32 Unknown 8th Aug '80 - 9:00pm AIRED
- 16 33 Unknown 15th Aug '80 - 9:00pm AIRED
- 16 34 Unknown 15th Aug '80 - 9:00pm AIRED
- 16 35 Unknown 22nd Aug '80 - 9:00pm AIRED
- 16 36 Unknown 29th Aug '80 - 9:00pm AIRED
- 16 37 Unknown 5th Sep '80 - 9:00pm AIRED
- 16 38 Unknown 12th Sep '80 - 9:00pm AIRED
- 16 39 Unknown 19th Sep '80 - 9:00pm AIRED
- 16 40 Unknown 26th Sep '80 - 9:00pm AIRED
- 16 41 Unknown 2nd Oct '80 - 9:00pm AIRED
- 16 42 Unknown 9th Oct '80 - 9:00pm AIRED
- 16 43 Unknown 16th Oct '80 - 9:00pm AIRED
- 16 44 Unknown 23rd Oct '80 - 9:00pm AIRED
- 16 45 Unknown 30th Oct '80 - 9:00pm AIRED
- 16 46 Unknown 6th Nov '80 - 9:00pm AIRED
- 16 47 Unknown 13th Nov '80 - 9:00pm AIRED
- 16 48 Unknown 20th Nov '80 - 9:00pm AIRED
- 16 49 Unknown 27th Nov '80 - 9:00pm AIRED
- 16 50 Unknown 3rd Dec '80 - 9:00pm AIRED
- 16 51 Unknown 10th Dec '80 - 9:00pm AIRED
- 16 52 Unknown 17th Dec '80 - 9:00pm AIRED

Season 15 Episodes
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Mark S15 as Watched
- 15 1 Season 15, Episode 01 1st Jan '79 - 9:00pm AIRED
- 15 2 Season 15, Episode 02 1st Feb '79 - 9:00pm AIRED
- 15 3 Season 15, Episode 03 1st Mar '79 - 9:00pm AIRED
- 15 4 Season 15, Episode 04 1st Apr '79 - 9:00pm AIRED
- 15 5 Season 15, Episode 05 1st May '79 - 9:00pm AIRED
- 15 6 Season 15, Episode 06 1st Jun '79 - 9:00pm AIRED
- 15 7 Season 15, Episode 07 1st Jul '79 - 9:00pm AIRED
- 15 8 Season 15, Episode 08 1st Aug '79 - 9:00pm AIRED
- 15 10 Season 15, Episode 10 1st Oct '79 - 9:00pm AIRED
- 15 11 Season 15, Episode 11 1st Nov '79 - 9:00pm AIRED
- 15 12 Season 15, Episode 12 1st Dec '79 - 9:00pm AIRED

Season 14 Episodes
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Mark S14 as Watched
- 14 1 Season 14, Episode 01 1st Jan '78 - 9:00pm AIRED
- 14 2 Season 14, Episode 02 1st Feb '78 - 9:00pm AIRED
- 14 14 The Message in the Rocks 17th Feb '78 - 9:00pm AIRED
- 14 3 Season 14, Episode 03 1st Mar '78 - 9:00pm AIRED
- 14 4 Season 14, Episode 04 1st Apr '78 - 9:00pm AIRED
- 14 5 Season 14, Episode 05 1st May '78 - 9:00pm AIRED
- 14 6 Season 14, Episode 06 1st Jun '78 - 9:00pm AIRED
- 14 7 Season 14, Episode 07 1st Jul '78 - 9:00pm AIRED
- 14 8 Season 14, Episode 08 1st Aug '78 - 9:00pm AIRED
- 14 9 Season 14, Episode 09 1st Sep '78 - 9:00pm AIRED
- 14 10 Season 14, Episode 10 1st Oct '78 - 9:00pm AIRED
- 14 11 Season 14, Episode 11 1st Nov '78 - 9:00pm AIRED
- 14 12 Season 14, Episode 12 1st Dec '78 - 9:00pm AIRED

Season 13 Episodes
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Mark S13 as Watched
- 13 1 Season 13, Episode 01 1st Jan '77 - 9:00pm AIRED
- 13 2 Season 13, Episode 02 1st Feb '77 - 9:00pm AIRED
- 13 3 Season 13, Episode 03 1st Mar '77 - 9:00pm AIRED
- 13 4 Season 13, Episode 04 1st Apr '77 - 9:00pm AIRED
- 13 5 Season 13, Episode 05 1st May '77 - 9:00pm AIRED
- 13 6 Season 13, Episode 06 1st Jun '77 - 9:00pm AIRED
- 13 7 Season 13, Episode 07 1st Jul '77 - 9:00pm AIRED
- 13 8 Season 13, Episode 08 1st Aug '77 - 9:00pm AIRED
- 13 9 Season 13, Episode 09 1st Sep '77 - 9:00pm AIRED
- 13 10 Season 13, Episode 10 1st Oct '77 - 9:00pm AIRED
- 13 11 Season 13, Episode 11 1st Nov '77 - 9:00pm AIRED
- 13 12 Season 13, Episode 12 1st Dec '77 - 9:00pm AIRED

Season 12 Episodes
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Mark S12 as Watched
- 12 1 Season 12, Episode 01 1st Jan '76 - 9:00pm AIRED
- 12 2 Season 12, Episode 02 1st Feb '76 - 9:00pm AIRED
- 12 3 Season 12, Episode 03 1st Mar '76 - 9:00pm AIRED
- 12 4 Season 12, Episode 04 1st Apr '76 - 9:00pm AIRED
- 12 5 Season 12, Episode 05 1st May '76 - 9:00pm AIRED
- 12 6 Season 12, Episode 06 1st Jun '76 - 9:00pm AIRED
- 12 7 Season 12, Episode 07 1st Jul '76 - 9:00pm AIRED
- 12 8 Season 12, Episode 08 1st Aug '76 - 9:00pm AIRED
- 12 9 Season 12, Episode 09 1st Sep '76 - 9:00pm AIRED
- 12 10 Season 12, Episode 10 1st Oct '76 - 9:00pm AIRED
- 12 11 Season 12, Episode 11 1st Nov '76 - 9:00pm AIRED
- 12 12 Season 12, Episode 12 1st Dec '76 - 9:00pm AIRED
- 12 0 18th Mar '06 - 9:00pm AIRED

Season 11 Episodes
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Mark S11 as Watched
- 11 1 Season 11, Episode 01 1st Jan '75 - 9:00pm AIRED
- 11 2 Season 11, Episode 02 1st Feb '75 - 9:00pm AIRED
- 11 3 Season 11, Episode 03 1st Mar '75 - 9:00pm AIRED
- 11 4 Season 11, Episode 04 1st Apr '75 - 9:00pm AIRED
- 11 5 Season 11, Episode 05 1st May '75 - 9:00pm AIRED
- 11 6 Season 11, Episode 06 1st Jun '75 - 9:00pm AIRED
- 11 7 Season 11, Episode 07 1st Jul '75 - 9:00pm AIRED
- 11 8 Season 11, Episode 08 1st Aug '75 - 9:00pm AIRED
- 11 9 Season 11, Episode 09 1st Sep '75 - 9:00pm AIRED
- 11 10 Season 11, Episode 10 1st Oct '75 - 9:00pm AIRED
- 11 11 Season 11, Episode 11 1st Nov '75 - 9:00pm AIRED
- 11 12 Season 11, Episode 12 1st Dec '75 - 9:00pm AIRED

Season 10 Episodes
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Mark S10 as Watched
- 10 1 Season 10, Episode 01 1st Jan '74 - 9:00pm AIRED
- 10 2 Season 10, Episode 02 1st Feb '74 - 9:00pm AIRED
- 10 3 Season 10, Episode 03 1st Mar '74 - 9:00pm AIRED
- 10 4 Season 10, Episode 04 1st Apr '74 - 9:00pm AIRED
- 10 5 Season 10, Episode 05 1st May '74 - 9:00pm AIRED
- 10 6 Season 10, Episode 06 1st Jun '74 - 9:00pm AIRED
- 10 7 Season 10, Episode 07 1st Jul '74 - 9:00pm AIRED
- 10 8 Season 10, Episode 08 1st Aug '74 - 9:00pm AIRED
- 10 9 Season 10, Episode 09 1st Sep '74 - 9:00pm AIRED
- 10 10 Season 10, Episode 10 1st Oct '74 - 9:00pm AIRED
- 10 11 Season 10, Episode 11 1st Nov '74 - 9:00pm AIRED
- 10 12 Season 10, Episode 12 1st Dec '74 - 9:00pm AIRED

Season 9 Episodes
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Mark S9 as Watched
- 9 1 Season 09, Episode 01 1st Jan '73 - 9:00pm AIRED
- 9 2 Season 09, Episode 02 1st Feb '73 - 9:00pm AIRED
- 9 3 Season 09, Episode 03 1st Mar '73 - 9:00pm AIRED
- 9 4 Season 09, Episode 04 1st Apr '73 - 9:00pm AIRED
- 9 5 Season 09, Episode 05 1st May '73 - 9:00pm AIRED
- 9 6 Season 09, Episode 06 1st Jun '73 - 9:00pm AIRED
- 9 7 Season 09, Episode 07 1st Jul '73 - 9:00pm AIRED
- 9 8 Season 09, Episode 08 1st Aug '73 - 9:00pm AIRED
- 9 9 Season 09, Episode 09 1st Sep '73 - 9:00pm AIRED
- 9 10 Season 09, Episode 10 1st Oct '73 - 9:00pm AIRED
- 9 11 Season 09, Episode 11 1st Nov '73 - 9:00pm AIRED
- 9 12 Season 09, Episode 12 1st Dec '73 - 9:00pm AIRED

Season 8 Episodes
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Mark S8 as Watched
- 8 1 Season 08, Episode 01 1st Jan '72 - 9:00pm AIRED
- 8 2 Season 08, Episode 02 1st Feb '72 - 9:00pm AIRED
- 8 3 Season 08, Episode 03 1st Mar '72 - 9:00pm AIRED
- 8 4 Season 08, Episode 04 1st Apr '72 - 9:00pm AIRED
- 8 5 Season 08, Episode 05 1st May '72 - 9:00pm AIRED
- 8 27 The Wizard Who Spat On The Floor 1st May '72 - 9:00pm AIRED
- 8 6 Season 08, Episode 06 1st Jun '72 - 9:00pm AIRED
- 8 7 Season 08, Episode 07 1st Jul '72 - 9:00pm AIRED
- 8 8 Season 08, Episode 08 1st Aug '72 - 9:00pm AIRED
- 8 9 Season 08, Episode 09 1st Sep '72 - 9:00pm AIRED
- 8 10 Season 08, Episode 10 1st Oct '72 - 9:00pm AIRED
- 8 11 Season 08, Episode 11 1st Nov '72 - 9:00pm AIRED
- 8 12 Season 08, Episode 12 1st Dec '72 - 9:00pm AIRED

Season 7 Episodes
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Mark S7 as Watched
- 7 1 Season 07, Episode 01 1st Jan '71 - 9:00pm AIRED
- 7 2 Season 07, Episode 02 1st Feb '71 - 9:00pm AIRED
- 7 3 Season 07, Episode 03 1st Mar '71 - 9:00pm AIRED
- 7 4 Season 07, Episode 04 1st Apr '71 - 9:00pm AIRED
- 7 5 Season 07, Episode 05 1st May '71 - 9:00pm AIRED
- 7 6 Season 07, Episode 06 1st Jun '71 - 9:00pm AIRED
- 7 7 Season 07, Episode 07 1st Jul '71 - 9:00pm AIRED
- 7 8 Season 07, Episode 08 1st Aug '71 - 9:00pm AIRED
- 7 9 Season 07, Episode 09 1st Sep '71 - 9:00pm AIRED
- 7 10 Season 07, Episode 10 1st Oct '71 - 9:00pm AIRED
- 7 11 Season 07, Episode 11 1st Nov '71 - 9:00pm AIRED
- 7 12 Season 07, Episode 12 1st Dec '71 - 9:00pm AIRED

Season 6 Episodes
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Mark S6 as Watched
- 6 1 Season 06, Episode 01 1st Jan '70 - 9:00pm AIRED
- 6 2 Season 06, Episode 02 1st Feb '70 - 9:00pm AIRED
- 6 3 Season 06, Episode 03 1st Mar '70 - 9:00pm AIRED
- 6 4 Season 06, Episode 04 1st Apr '70 - 9:00pm AIRED
- 6 5 Season 06, Episode 05 1st May '70 - 9:00pm AIRED
- 6 6 Season 06, Episode 06 1st Jun '70 - 9:00pm AIRED
- 6 7 Season 06, Episode 07 1st Jul '70 - 9:00pm AIRED
- 6 8 Season 06, Episode 08 1st Aug '70 - 9:00pm AIRED
- 6 9 Season 06, Episode 09 1st Sep '70 - 9:00pm AIRED
- 6 10 Season 06, Episode 10 1st Oct '70 - 9:00pm AIRED
- 6 11 Season 06, Episode 11 1st Nov '70 - 9:00pm AIRED
- 6 12 Season 06, Episode 12 1st Dec '70 - 9:00pm AIRED

Season 5 Episodes
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Mark S5 as Watched
- 5 1 Lindemann Enigma 12th Sep '68 - 9:00pm AIRED
- 5 2 From Field to Factory 19th Sep '68 - 9:00pm AIRED
- 5 3 Comfort on Ageing 26th Sep '68 - 9:00pm AIRED
- 5 4 Experiments in War 3rd Oct '68 - 9:00pm AIRED
- 5 5 African Medicine 17th Oct '68 - 9:00pm AIRED
- 5 6 The Broken Bridge 24th Oct '68 - 9:00pm AIRED
- 5 7 Children Without Words 31st Oct '68 - 9:00pm AIRED
- 5 8 Computer Revolution 7th Nov '68 - 9:00pm AIRED
- 5 9 Doctor's Dilemma 14th Nov '68 - 9:00pm AIRED
- 5 10 In the Matter of Dr Alfred Nobel 21st Nov '68 - 9:00pm AIRED
- 5 11 Wheels Within Wheels 28th Nov '68 - 9:00pm AIRED
- 5 12 Black Man ? White Science 5th Dec '68 - 9:00pm AIRED
- 5 13 Hidden World 12th Dec '68 - 9:00pm AIRED
- 5 14 The Talgai Skull 19th Dec '68 - 9:00pm AIRED
- 5 15 Phantasmagoria, The Magic Lantern 24th Dec '68 - 9:00pm AIRED
- 5 16 Inside Every Fat Man... 2nd Jan '69 - 9:00pm AIRED
- 5 17 If Only They Could Speak 9th Jan '69 - 9:00pm AIRED
- 5 18 The Miraculous Wonder, The Human Eye 16th Jan '69 - 9:00pm AIRED
- 5 19 The Year of the Locusts 23rd Jan '69 - 9:00pm AIRED
- 5 20 The Gifted Child 30th Jan '69 - 9:00pm AIRED
- 5 21 The Last of the Polymaths 6th Feb '69 - 9:00pm AIRED
- 5 22 Music and the Mind 13th Feb '69 - 9:00pm AIRED
- 5 23 Report on V.D. 20th Feb '69 - 9:00pm AIRED
- 5 24 The Drift from Science 6th Mar '69 - 9:00pm AIRED
- 5 25 Powers of Persuasion 13th Mar '69 - 9:00pm AIRED
- 5 26 The View from Space 20th Mar '69 - 9:00pm AIRED
- 5 27 The Unborn Patient 27th Mar '69 - 9:00pm AIRED
- 5 28 King Solomon's Garden 10th Apr '69 - 9:00pm AIRED
- 5 29 Muck Today ? Poison Tomorrow 24th Apr '69 - 9:00pm AIRED
- 5 30 Shark 1st May '69 - 9:00pm AIRED
- 5 31 Technology and Self Determination 15th May '69 - 9:00pm AIRED
- 5 32 After Apollo 22nd May '69 - 9:00pm AIRED
- 5 33 Dicovery 29th May '69 - 9:00pm AIRED
- 5 34 Machines and People, Rt. Hon. A. Wedgwood-Benn 5th Jun '69 - 9:00pm AIRED

Season 4 Episodes
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Mark S4 as Watched
- 4 1 The War of the Boffins 12th Sep '67 - 9:00pm AIRED
- 4 2 Aspects of Alcohol 26th Sep '67 - 9:00pm AIRED
- 4 3 Lords of the Sea 10th Oct '67 - 9:00pm AIRED
- 4 4 Lords of the Sea 24th Oct '67 - 9:00pm AIRED
- 4 5 Air Safety, The Unknown Factor 7th Nov '67 - 9:00pm AIRED
- 4 6 Unknown 21st Nov '67 - 9:00pm AIRED
- 4 7 Koestler on Creativity 5th Dec '67 - 9:00pm AIRED
- 4 8 The World of Ted Serios 12th Dec '67 - 9:00pm AIRED
- 4 9 Professor in Toyland 24th Dec '67 - 9:00pm AIRED
- 4 10 An Ingenious Man, Sir H. John Baker 2nd Jan '68 - 9:00pm AIRED
- 4 11 Man's Best Friend 30th Jan '68 - 9:00pm AIRED
- 4 12 Once a Junkie 13th Feb '68 - 9:00pm AIRED
- 4 13 Town Traffic and Tomorrow 27th Feb '68 - 9:00pm AIRED
- 4 14 The Man Makers 12th Mar '68 - 9:00pm AIRED
- 4 15 Man in Search of Himself 26th Mar '68 - 9:00pm AIRED
- 4 16 Investigating Murder 9th Apr '68 - 9:00pm AIRED
- 4 17 The Equation of Murder 6th May '68 - 9:00pm AIRED

Season 3 Episodes
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Mark S3 as Watched
- 3 1 Ten Years in the Antarctic 10th Oct '66 - 9:00pm AIRED
- 3 2 The Athlete 24th Oct '66 - 9:00pm AIRED
- 3 3 From Peenemunde to the Moon 7th Nov '66 - 9:00pm AIRED
- 3 4 Unknown 21st Nov '66 - 9:00pm AIRED
- 3 5 The Structure of Life 5th Dec '66 - 9:00pm AIRED
- 3 6 Hand Me My Sword, Humphrey 25th Dec '66 - 9:00pm AIRED
- 3 7 Sons of Cain 17th Jan '67 - 9:00pm AIRED
- 3 8 How Best to Make a Man, How Best to Make a Scientist 14th Feb '67 - 9:00pm AIRED
- 3 9 Dynamo, The Life of Michael Faraday 28th Feb '67 - 9:00pm AIRED
- 3 10 Migraine 14th Mar '67 - 9:00pm AIRED
- 3 11 How Safe Is Surgery? 28th Mar '67 - 9:00pm AIRED
- 3 12 The Shape of War to Come 25th Apr '67 - 9:00pm AIRED
- 3 13 Memory 9th May '67 - 9:00pm AIRED
- 3 14 Masters of the Desert 23rd May '67 - 9:00pm AIRED
- 3 15 Cancer, The Smoker's Gamble 20th Jun '67 - 9:00pm AIRED
- 3 16 Science and the Supernatural 4th Jul '67 - 9:00pm AIRED
- 3 17 Hypnosis 18th Jul '67 - 9:00pm AIRED

Season 2 Episodes
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Mark S2 as Watched
- 2 1 Special Senses 10th Oct '65 - 9:00pm AIRED
- 2 2 An Affair of the Heart 25th Oct '65 - 9:00pm AIRED
- 2 3 Ten Thousand Tombs 7th Nov '65 - 9:00pm AIRED
- 2 4 Toil, Sweat & Tears 21st Nov '65 - 9:00pm AIRED
- 2 5 The Big Dishes and the Living Stream 5th Dec '65 - 9:00pm AIRED
- 2 6 Unknown 19th Dec '65 - 9:00pm AIRED
- 2 7 Unknown 2nd Jan '66 - 9:00pm AIRED
- 2 8 Unknown 16th Jan '66 - 9:00pm AIRED
- 2 9 A Man of Two Visions 30th Jan '66 - 9:00pm AIRED
- 2 10 Unknown 13th Feb '66 - 9:00pm AIRED
- 2 11 Unknown 27th Feb '66 - 9:00pm AIRED
- 2 12 Unknown 13th Mar '66 - 9:00pm AIRED
- 2 13 Unknown 27th Mar '66 - 9:00pm AIRED
- 2 14 Unknown 10th Apr '66 - 9:00pm AIRED
- 2 15 Unknown 24th Apr '66 - 9:00pm AIRED
- 2 16 Man In Space 8th May '66 - 9:00pm AIRED
- 2 17 Unknown 22nd May '66 - 9:00pm AIRED
- 2 18 Unknown 5th Jun '66 - 9:00pm AIRED
- 2 19 Unknown 19th Jun '66 - 9:00pm AIRED
- 2 20 Unknown 3rd Jul '66 - 9:00pm AIRED
- 2 21 The Lonely Children 17th Jul '66 - 9:00pm AIRED
- 2 22 Unknown 31st Jul '66 - 9:00pm AIRED
- 2 23 Unknown 11th Sep '66 - 9:00pm AIRED
- 2 24 Unknown 25th Sep '66 - 9:00pm AIRED

Season 1 Episodes
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Mark S1 as Watched
- 1 1 The World of Buckminster Fuller 2nd May '64 - 9:00pm AIRED
- 1 2 Pesticides and Posterity 30th May '64 - 9:00pm AIRED
- 1 3 A Candle to Nature 27th Jun '64 - 9:00pm AIRED
- 1 4 Strangeness Minus Three 25th Jul '64 - 9:00pm AIRED
- 1 5 The Air of Science 22nd Aug '64 - 9:00pm AIRED
- 1 6 The Knowledge Explosion 21st Sep '64 - 9:00pm AIRED
- 1 7 The Amateur Scientist 19th Oct '64 - 9:00pm AIRED
- 1 8 Tots and Quots and Woodgerie 16th Nov '64 - 9:00pm AIRED
- 1 9 Professor J.B.S. Haldane, Obituary 1st Dec '64 - 9:00pm AIRED
- 1 10 Science, Toys and Magic 16th Dec '64 - 9:00pm AIRED
- 1 11 Learning from Machines 6th Jan '65 - 9:00pm AIRED
- 1 12 The Technique of Change 20th Jan '65 - 9:00pm AIRED
- 1 13 Star Gazers 3rd Feb '65 - 9:00pm AIRED
- 1 14 Science and Art 17th Feb '65 - 9:00pm AIRED
- 1 15 The Great Computer Scandal 3rd Mar '65 - 9:00pm AIRED
- 1 16 Unknown 17th Mar '65 - 9:00pm AIRED
- 1 17 Faster, Farther, Higher 31st Mar '65 - 9:00pm AIRED
- 1 18 Other Side of the Pill 14th Apr '65 - 9:00pm AIRED
- 1 19 Unknown 12th May '65 - 9:00pm AIRED
- 1 20 Unknown 26th May '65 - 9:00pm AIRED
- 1 21 Unknown 9th Jun '65 - 9:00pm AIRED
- 1 22 Unknown 23rd Jun '65 - 9:00pm AIRED
- 1 23 Dr. Joseph Needham 14th Jul '65 - 9:00pm AIRED
- 1 24 Unknown 28th Jul '65 - 9:00pm AIRED
- 1 25 Certain of Uncertainty 11th Aug '65 - 9:00pm AIRED
- 1 26 Unknown 25th Aug '65 - 9:00pm AIRED
- 1 27 Fuel for the Future 8th Sep '65 - 9:00pm AIRED
- 1 28 Let Newton Be 22nd Sep '65 - 9:00pm AIRED

Horizon Summary & Series Guide

Horizon Series Guide

Horizon Synopsis and Schedule