As the teams race through Palermo, Sicily, unlikely alliances are formed contestants must beat the clock during a high-octane go-cart race.
The guests on Graham's sofa: the one and only Dame Shirley Bassey, comedian and children's author David Walliams, comic actress Catherine Tate, director and IT Crowd star Richard Ayoade, and music from the great Annie Lennox, who performs God Bless The Child.
Reverend Richard Coles, Sara Pascoe and Bill Bailey look through a list of L-themed larks.
Lewis' reputation is jeopardized when the very first case that he solved as a DI is reopened for appeal and new murders are committed with the original weapon.
When he gets upset, Mikey flees and befriends a mutant frog in the woods, only to learn the frog and his family have nefarious plans.
Charmcaster traps Gwendolyn in Ledgerdomain to exact her revenge once and for all.
John and Zed engage in a dangerous confrontation to save a woman and her family from sinister forces. John's efforts force him to confront the darkness in his own life - while also coming face to face with a new powerful adversary in Papa Midnite.
When Walden asks Alan to sign a pre-nup, Alan gets offended and has second thoughts about getting married.
The case of a maid's death turns out to be a bigger case than originally thought. Tensions are rising between Cam and Brennan.
Find out about Automatic Sliding Doors, Gin, and Firearms Restoration on this episode.
British comedian Russell Howard shares his views on the topical news of the previous week.
Unable to believe Jake is guilty, Olivia seeks out Tom for more information; Huck plays with fire.
When the gang recreates a high-school prom night on the roof of the guys' apartment building, Sheldon feels pressure to participate in all the typical romantic traditions.
Danny Jones, Tom Fletcher, James Bourne, Matt Willis, Dougie Poynter and Harry Judd
Rebecca does not show her support for Tedward, this causes him to come to the realization about their friendship. Rebecca runs into her archnemsis at the courthouse.
Meg realises that everyone she knows is on the new dating app BangR. Anxious to prove to Mark that she's winning their break-up, she joins up and scores a date with a fit bloke.