Mel Giedroyc: Unforgivable

Graham Norton reveals a lie to his mother that went too far leading to him having to have his appendix removed, Alex Brooker talks about 'trying to catch a girl' in a Home Alone inspired trap and Desiree Burch admits to cheating with a friend's boyfriend at high school.

Jimmy Carr reveals an act of erotic vandalism committed at school, Judi Love tells all about the horrific demise of her beloved pet goldfish and Richard Bacon tells a truly Unforgivable tale about rugby tackling a disabled boy.

Johnny Vegas overshares about what he used to get up to in the bath, Josh Widdicombe tells all about the time he ruined hundreds of Beckham fans day, and Clare Balding admits blaming her brother for a bowel movement in the bath 40 years ago.

Mel and her dishonourable assistant Lou Sanders are joined by brilliant stand-ups Sarah Millican, Jamali Maddix and Chris McCausland. Sarah discusses what ingredient she thinks should be added to cakes in Amsterdam, Chris has to apologise to one of the victims of his prank-fuelled past while Jamali and Mel find out they have similar tactics when being caught short without a loo.

Mel and Lou are joined by the brilliant Katherine Ryan, Drag Race standout star Bimini Bon Boulash, and stand-up Toussaint Douglass. Katherine spills the beans on her prom night, Bimini reveals what happens after too many vodkas and Toussaint explains why you should never accept chicken from strangers.

Mel and Lou are joined by stand-up and Strictly champion Bill Bailey, award-winning comedian Rosie Jones and former heavyweight champion of the world David Haye. Bill comes face to face with multiple victims of his and his dog's bad behaviour, David overshares about creative ways to take his training supplements and Rosie confesses all the times she's used her disability for evil.

Mel and Lou are joined by Rhod Gilbert, Susan Wokoma and Dermot O'Leary. Rhod reveals why he shouldn't be trusted with a campervan, Susan tells an X-rated story and Dermot lifts the lid on a rendezvous from his early TV days.

Mel and Lou are joined by Thaniya Moore, Joel Dommett and Craig Revel Horwood. Joel Dommett lifts the lid on a shocking act with a kettle, Craig Revel Horwood reveals how he ruined a bride's big day, and Thanyia Moore bares all on getting revenge on a teacher.

This week Mel and her dishonourable assistant Lou Sanders are joined by Charlotte Church, Sophie Willan and Lara Ricote. Charlotte spills the beans on her wild child past, Sophie dishes out some karma and Lara reveals how she pulled off a cheese-based heist.

In the first episode, Mel and her dishonourable assistant Lou Sanders are joined by Rylan Clark, Lucy Beaumont and Fatiha El-Ghorri. Lucy admits she nicked knickers in school, Fatiha reveals her secret cooking ingredient is sheep poo, and Rylan spills the beans on how he combined a pigeon meeting a sticky end and getting revenge on a colleague.

Mel and Lou are joined by Joel Dommett, Omid Djalili and Lindsey Santoro. Joel confesses his dastardly behaviour as his wife gave birth and Omid reveals how he upset Gwyneth Paltrow.

This week Mel and her dishonourable assistant Lou Sanders are joined by Nish Kumar, Ruby Wax and Reuben Kaye. Nish spills the beans on his x-rated workplace behaviour, Ruby tells of her drug smuggling past and Reuben's NSFW pantomime pranks are revealed.