2015/2016 Episode 5 of 10 John Humphrys puts the questions to some of the UK's cleverest celebrities. Actor Vincent Franklin, athlete Christian Malcolm, BBC Radio 5 live presenter Chris Warburton and comedian Graham Fellows - aka John Shuttleworth - take on the Mastermind chair, answering questions on Disney-Pixar films, Olympic sprinting, Reeves and Mortimer and Donald Crowhurst.