Babatunde Aleshe

Rob Brydon and team captains Lee Mack and David Mitchell sort fact from fiction with Babatunde Aléshé, Mike Bubbins, Jessica Knappett and Claudia Winkleman.

The Doctor must pass himself off as a human being to solve the mystery of a staircase that people go up, but never down.

Jimmy Carr hosts, as Rob Brydon and Katherine Parkinson take on Jon Richardson and Babatunde Aléshé; Adam Buxton joins Susie in Dictionary Corner; Joe Wilkinson helps Rachel with the numbers in his own inimitable fashion.

Bradley Walsh hosts as celebrities Kym Marsh, Jenny Ryan, Babatunde Aleshe, Chris McCausland, Michael Dapaah and Chizzy Akudolu try to fill in the missing blanks and win prizes for some lucky contestants.

Jack Dee does some energetic air cycling; Babátúndé Aléshé phones a friend; Andy Zaltzman deliberately dirties poor Alex Horne's carefully ironed trousers; Emma Sidi reveals a startling belief about socks.

Andy Zaltzman, Babátúndé Aléshé, Emma Sidi, Jack Dee and Rosie Jones attempt to impress the taskmaster by searching for a seal, hurling yoga balls in a theme park and force-feeding Alex a bowlful of bubblegum.