John Humphrys presents the celebrity version of Britain's toughest quiz.
In the first of this year's series, actress Emma Barton, Casualty's Tony Marshall, comedian Zoe Lyons and Olympic athlete Jamie Baulch take on the famous black chair and answer questions on the Carry On films, Richard Pryor, Quentin Crisp and Prince.
Presenter Ore Oduba, 2014 Olympic skeleton gold-medallist Lizzy Yarnold, The One Show's Alex Riley and the legendary Ken Dodd answer questions on David Beckham, the Archers, Triumph TR sports cars and theatre variety comedians since 1950.
BBC Radio 6 Music's Mary Anne Hobbs, writer, actor and comedian Neil Fitzmaurice, CBBC presenter Katie Thistleton and TV presenter Johnny Ball take on the famous black chair and answer questions on Barry Sheene, the films of Robert de Niro, Rachel Green from Friends and Michael Faraday.
CBeebies' Andy Day, writer of the Shetland crime series Ann Cleeves, actor and comedian Tom Rosenthal and BBC economics editor Robert Peston take on the Mastermind chair. They answer questions on the Back to the Future films, the Shetland Islands, flags of the world and David Bowie 1966-1976.
Four more celebrities take on the Mastermind challenge, as comedian Rob Deering, model Amy Willerton, Erasure singer Andy Bell and W1A's director of strategic governance - actor Jason Watkins - answer questions on the novels of Jane Austen, Anne Boleyn, Blondie and actor and theatre impresario David Garrick.
TV presenter Kate Thornton, comedian Tony Law, the League of Gentlemen's Steve Pemberton and The Simpsons actor Harry Shearer take on the famous black chair, answering questions on George Michael, fighter aircraft of the Second World War, the films of the Coen Brothers and the National Basketball Association since 1976.
Four more celebrities take on the famous black chair as actor Jimmy McKenna, newsreader Gillian Joseph, presenter Dallas Campbell and comedian Russell Kane answer questions on Frank Sinatra, the Parables of the New Testament, the films of Werner Herzog and the novels of Ernest Hemingway.
Four more celebrities take on the famous black chair as television presenter Gethin Jones, actor Ben Bailey Smith, Radio 4 presenter Aasmah Mir and actor and comedian Mark Little answer questions on Welsh international rugby, the films of the Marx Brothers, the novels of Hanif Kureishi and Hunter S Thompson.
Four more celebrities take on the famous black chair. Radio 1 presenter Gemma Cairney, Olympic boxer Anthony Ogogo, actress Tina Malone and BBC Breakfast's Dominic Laurie answer questions on the Spice Girls, British middleweight boxers of the 1990s, Barbra Streisand and the London Underground.
Poet and comedian Tim Key, Antiques Roadshow glass specialist Andy McConnell, singer-songwriter Amy Macdonald and lyricist Sir Richard Stilgoe answer questions on Andy Murray, Joe Cocker, the TV series Still Game and British musicals up to 1980.
