Jo Brand, Amanda Byram and Kate Silverton

E1

Rhod Gilbert, along with regulars Greg Davies and Lloyd Langford are joined in their quest for answers by Jo Brand, Amanda Byram and Kate Silverton.

Sarah Millican, Dave Gorman and Lorraine Kelly

E2

Regular panellists Greg Davies and Lloyd Langford are joined by Dave Gorman, Sarah Millican and guest authenticator Lorraine Kelly.

Micky Flanagan, Carol Vorderman and Suzi Perry

E3

Rhod Gilbert and the regulars are joined by Micky Flanagan, Suzi Perry and Carol Vorderman.

Russell Kane, Connie Fisher, James Martin

E4

Rhod, along with panel regulars Greg Davies and Rhod's flatmate Lloyd Langford are joined in their quest by guest comic Russell Kane, Connie Fisher and guest 'authenticator' James Martin, whose job is to grease the wheels en route to enlightenment.

David Tennant, Rita Simons, Adam Hills

E5

Rhod, along with panel regulars Greg Davies and Rhod's flatmate Lloyd Langford are joined in their quest by David Tennant, Rita Simons, and Adam Hills.

Louise Minchin, Jack Whitehall, Arlene Phillips

E6

Rhod Gilbert and the regulars are joined by guests Louise Minchin, Jack Whitehall and Arlene Phillips

Andi Osho, Susanna Reid, Goldie

E7

Rhod, along with panel regulars Greg Davies and Rhod's flatmate Lloyd Langford are joined in their quest by guest comic Andi Osho, musician Goldie and guest Authenticator Susanna Reid, whose job is to grease the wheels en route to enlightenment.

Kaye Adams, Katy Brand, Erin Boag

E8

Rhod, along with panel regulars Greg Davies and Rhod's flatmate Lloyd Langford are joined in their quest by celebrity guests Kaye Adams, Katy Brand, and Erin Boag.