John Humphrys presents the celebrity version of Britain's toughest quiz.
Share this with
This programme is not currently available on BBC iPlayer
There are no upcoming broadcasts of this programme
Sat 6 Dec 2014 17:25
All previous episodes
See all from 2013/2014
See all clips from 2013/2014
Visit the Mastermind site for updates from the continuing series.
See all galleries from 2013/2014