The remaining teams set off on the fourth leg of the race.

The cast of So Random! produce a ghoulish and ghostly Halloween special, including a guest appearance by Shaquille O'Neal, musical guest Allstar Weekend, and Sonny's never-before-seen performance of a new song.

Fitz tries to hook Larry up with a drunk chick, only to end up sleeping with Janet, the drunkest of them all. But the next morning Fitz discovers Janet wasn't drunk, she's brain damaged. Meghan meanwhile tries to get back on the dating horse. When she mistakes an attempted purse snatching for a come-on, she takes her mugger hostage at a motel. Larry thinks Fitz's latest predicament is a perfect opportunity to teach him about love and devotion. But it gets complicated when Ali shows up. Especially since her comatose mother has developed a communication technique with her finger twitches, and she has an actual case against Fitz...

As the wedding day nears, the three wives help fiancée Robyn pick a wedding dress, a cake, and a venue for their unique polygamist wedding reception. Meanwhile, it's Janelle's birthday and Kody has a special trip planned just for the two of them.

The big day is finally here! Follow Kody and his wives as they make Robyn officially wife number four. See this extraordinary family as they celebrate the newest additions to their family and prepare to embark on a new chapter in their lives.

Kim meets football star Miles Austin; Kourtney thinks about expanding D-A-S-H by moving to New York but her sisters are against the idea. Meanwhile, Scott and Bruce spend some bonding time together.

Susan is horrified when she discovers that she has become the face of the provocative internet company she's been secretly working for, and is now the cover model for their outdoor billboard ads. Gabrielle tells her coveted secret to the ladies, and Renee finds out that Bree is a grandmother and uses it to her advantage in an attempt to steal Keith away and have him for herself.

Dexter finds himself in a strange situation when, instead of taking a life, he has to save one. Deb has a scary confrontation with a key suspect in the Santa Muerte murder cases. Quinn continues following up on the strange similarities between 'Kyle Butler' and Dexter Morgan.

Bryan Bedford, Chairman of the Board, President and CEO of Frontier Airlines, a billion dollar a year business that ranks as one of the top air carriers in the country, goes undercover in his own company, where he "gets christened" while emptying a plane's lavatory, contributes to a flight's late departure time and discovers how company-wide pay cuts are impacting his employees' lives.

Will uncovers the missing link between Truxton and Hadas's death; Katherine discovers the truth behind her husband's suicide.

Eli, Margaret and Van Alden undermine Nucky's attempts to usher in a joyous St. Patrick's Day.

Bo is hired by a Dark Fae named Mayer to find out how a human managed to win a bet with him. The reward for finding out is having an Oracle reveal something of Bo's past to her. Bo solves the mystery by finding out that a Fae that can jump between human corpses, called a Hsien, managed the deed. In the end, the answers Bo seeks are not given, but she does learn one thing. Her mother is alive, and coming for Bo.

With a week left in the season, the gators have mysteriously stopped biting; swampers fight back with their own tried-and-true tactics as well as some new territories.

Justin and Rebecca reach an impasse in their relationship; Holly has a breakdown over her inability to remember her own daughter; Sarah struggles to keep up with the Joneses when Cooper lands the lead role in "Romeo & Juliet"; Saul takes a huge risk to make a romantic connection with a dear friend; and Kitty struggles with an affair of the heart.

A young girl is kidnapped and the CSIs' only witness is a blind man who heard the abduction, leading Horatio to an old nemesis.

Don and Peggy are faced with life-altering decisions.

A professor hires Jonathan to track down a valuable item; George finds an alibi to explain his drug test results; Ray meets a familiar barfly.

Roger warns Kenny about the perils of showboating; Kenny has competition in his courtship of Vida.

Dr. Venture is contemplating suicide, but Dr. Orpheus realizes that he's possessed.

Love is in the air as Lucy thinks that Natsu has secret feelings for her. Meanwhile the whole Fairy Tail guild is turned upside down because Juvia whom believes that her relationship is going no where employs magical help from a love potion which in fact turns out to be a potion which makes the person who drinks it think that the first thing they see is their rival; Juvia attempts to use in on Gray but misses multiple times making everyone in the guild have rivals.

Androvax the Veil returns to Earth and asks for the gangs help, but how can they trust him? Or is the threat posed by the Vault of Secrets great enough to overcome old enmities. And when the android guardians threaten destruction, is there really any other choice?

Quiz show presented by Victoria Coren in which knowledge will only take you so far, as patience and lateral thinking are also vital.

Miles learns that a criminal called Billy Bunhill has been shot inside another notorious Kray haunt, The Blind Beggar pub. Chandler's interest is piqued when he realises that the murder mirrors George Cornell's killing by Ronnie Kray in 1966. Who could possibly be trading off the ghosts of the Krays and using their legend to invoke fear and paranoia on the streets of Whitechapel? When the threats become personal and the killer seems to be one step ahead, Chandler and Miles have to wonder just how far the murderer's power reaches.

The American President travels to London to chair a secret talk between peace negotiators from Palestine and Israel in an effort to sort out the differences between the two countries. Beth and Dimitri both go undercover as Home Office liaison officers at the talks, while the rest of team have to make sure that nothing jeopardises the event.

Horizon explores the strange and wonderful world of illusions - and reveals the tricks they play on our senses and why they fool us. We show how easy it is to trick your sense of taste by changing the colours of food and drink, explain how what you see can change what you hear, and see just how unreliable our sense of colour can be. But all this trickery has a serious purpose. It's helping scientists to create a new understanding of how our senses work - not as individual senses, but connected together. It holds the intriguing possibility that one sense could be mapped into another. This is what happened to Daniel Kish, who lost his sight as a child. He is now able to create a vision of the world by clicking his tongue which allows him to echolocate like a bat. And in a series of MRI scans, scientists are now looking to find out if Daniel's brain may have actually rewired itself enabling him to use sound to create a visual image of the world.

Will attempts to organise one last adventure for the group before they end up going their separate ways. The four of them head off for a camping trip in the countryside. Will finds himself drawing on his scout training for the experience whilst Jay, Neil and Simon are not prepared for the great outdoors.

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