Series 5
1. Episode One
First broadcast: Tuesday 30th August 2016
Ross Kemp, Bob Mortimer and Sara Cox put their fascinating theories to the test by whatever means necessary.
2. Episode Two
First broadcast: Tuesday 6th September 2016
Lee Mack is joined by Rhod Gilbert, Ruth Jones and Richard Madely.
3. Episode Three
First broadcast: Tuesday 13th September 2016
Lee Mack is joined by Claudia Winkleman, Johnny Vegas and Joe Lycett.
4. Episode Four
First broadcast: Tuesday 20th September 2016
This week, Lee is joined by Jason Byrne, Danny Dyer and Meera Syal.
5. Episode Five
First broadcast: Tuesday 27th September 2016
This week's guests are Danny Baker, Roisin Conaty and Jack Dee.
6. Episode Six
First broadcast: Tuesday 4th October 2016
Mad Dogs actor Philip Glenister and comedians Jo Brand and Josh Widdicombe join host Lee Mack in putting more madcap theories to the test.
7. Episode Seven
First broadcast: Tuesday 11th October 2016
Paul Hollywood, Gabby Logan and Hal Cruttenden join Lee Mack in the studio to test out more obscure facts and theories.
Highlights Special: Best Of
First broadcast: Tuesday 18th October 2016
A look back at the best moments of the series, featuring Paul Hollywood, Johnny Vegas, Danny Dyer and inimitable host Lee Mack.