Season 19 begins with the 16 houseguests being introduced and entering the compound. Once inside, they encounter tempting offers for money, power and safety that could change the course of the game on the first night.

Dom pushes boundaries at the gym; Christina takes charge of Kayla and the girls; Jay continues to struggle with Amy and work; Lisa gets Nate a fight on short notice; and Ryan takes a break from training.

Zoe learns why her mom forbade her from riding. Jade uncovers a secret about Raven's past. Becky proves to Ben that horses are better than quad bikes.

The kids get trapped in a human house.

The Top 18 face a mystery box challenge that includes cooking some of the finest shellfish in the world. The winner will receive a huge advantage moving forward, leaving the rest of the home cooks to compete in an elimination challenge, during which they must create a Gordon Ramsay classic. Then, it is up to the judges to decide who will leave the kitchen.

Mavis' cousin shows up and challenges her to a game of phlegm ball.

When Jerrod survives a tragedy, he fights against being coddled by his family and being labeled a victim, but things are made harder when he's forced to tell a police officer exactly what he saw.

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After Jonathon's online love disappears for a month, he enlists Nev and Max to help track him down. But when the guys discover a former catfish is involved, they begin to suspect Jonathon himself may be in on the deception!.

Liza deals with the aftermath of coming clean with Kelsey and Charles tests their synchronicity. Also: Kelsey and Josh become unlikely allies.

Uzo Aduba and Danielle Brooks Face Off.

Micah finds solace at Nova's place. Charley confronts Davis about their custody arrangement. Aunt Violet's time with Hollywood might be short-lived. Nova meets someone at a symposium. Ralph Angel confronts Jacob Boudreaux about spying on his property.

Arthur and Grace race through a mysterious city only to fall prey to its nocturnal inhabitants.

Ashley Graham and Jermaine Fowler face off.

Samantha sits down with Senator Elizabeth Warren to grab some secondhand hope.

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Actor Josh Duhamel; actor Justin Bartha; physicist Brian Greene.

Sam searches for the perfect "heel" to fight Debbie, but she's tough to please. To hone her act, Ruth tags along with Gregory to a family function.

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The bottom four contestants from the team challenge now must cook off and produce a spectacular dish to stay alive in the competition.

As the NCC closes in on the man who forced Clay to kill himself, Janet discovers who is behind the betting syndicate, placing both herself and her father in danger.

Georgina searches for answers by reviewing Constantine's movements on the day of the explosion. Christos's hedonistic behaviour spirals out of control.

Jimmy Carr hosts the words-and-numbers game, with Jon Richardson and Jonathan Ross taking on guest captain Lee Mack and Victoria Coren Mitchell. Jessie Cave joins Susie Dent in Dictionary Corner and Rachel Riley looks after the numbers and letters

The car has shrunk the world, increased personal freedom and in so many ways expanded our horizons, but there is a flipside. Fumes from car exhausts have helped to destroy our environment, poisoned the air we breathe and killed us in far more straightforward ways. But all that is going to change.

This episode of Horizon enters a world where cars can drive themselves, a world where we are simply passengers, ferried about by wholesome green compassionate technology which will never ever go wrong. And it is almost here. Horizon explores the artificial intelligence required to replace human drivers for cars themselves, peers into the future driverless world and discovers that, despite the glossy driverless PR (and assuming that they really can be made to work reliably), the reality is that it might not be all good news. From the ethics of driverless car crashes to the impact on jobs, it might be that cars are about to rise up against us in ways that none of us are expecting.

Dara O'Briain and Hugh Dennis look back on another week's events with the help of guests Angela Barnes, Ed Byrne, Milton Jones, Nish Kumar and Romesh Ranganathan.