Britain's toughest quiz returns for a new series. Host John Humphrys invites four contestants to answer questions in the black chair, first on their chosen specialist subject and then on general knowledge in their quest to become the nations's Mastermind.

The hunt for the nation's Mastermind continues. John Humphrys quizzes four more contenders on their specialist subject and their general knowledge. Subjects are the television series To the Manor Born, the life and career of Lance Armstrong, Napoleon's marshals, and the life and works of Charles Ives.

Host John Humphrys invites four more contenders to answer questions in the black chair. Topics are the Tudor monarchy, the travelogues of Michael Palin, postage stamps of the 19th century and Belle and Sebastian.

Host John Humphrys invites four more contenders to answer questions in the black chair. Topics are the Academy Awards, the life of Bertrand Russell, the life and career of Vivienne Westwood, and Julius Caesar.

Host John Humphrys invites four more contenders to answer questions in the black chair. Topics are sharks, Leeds United - the Don Revie years, Louis XIV of France and the Manic Street Preachers.

John Humphrys hosts Britain's toughest quiz. Four more contenders are questioned on their specialist subject and general knowledge. Topics are: The Life and Works of Charles M Schulz; The 2nd Ranger Battalion in World War Two; The Plays of Tennessee Williams; and UK Prog Rock 1968-1978.

John Humphrys hosts Britain's toughest quiz. Four more contenders are questioned on their specialist subject and general knowledge. Topics are the football World Cup finals 1970-2006, the TV plays of Alan Bennett, Bletchley Park and U2.

John Humphrys hosts Britain's toughest quiz. Four more contenders are questioned on their specialist subject and general knowledge. Topics are: the Hannibal Lecter novels of Thomas Harris, the history of Alcatraz, the Carry On films and The Beatles.

Host John Humphrys invites four more contenders to answer questions in the black chair. Topics are the solar system, the life and career of Andy Kaufman, the Scottish Covenanters and the Byrds.

John Humphrys puts the questions to four more contenders. The subjects are: the life and films of Marlon Brando, the history of the Tour De France, the life and works of Ralph Reader and 20th-century American presidents.

John Humphrys puts the questions to four more contenders. The subjects are: the life and career of Richard Pryor, the Louie Knight novels of Malcolm Pryce, the Grand National since 1960 and the life and works of Robert Doisneau.

John Humphrys puts the questions to four more contenders. The subjects are: the life and career of Richard Pryor, the Louie Knight novels of Malcolm Pryce, the Grand National since 1960 and the life and works of Robert Doisneau.

John Humphrys asks the questions as the hunt continues for the nation's Mastermind. Subjects tonight are: Mott the Hoople, the life of Robert Baden-Powell, the geography of South America, and Rameses II.

John Humphrys asks the questions as the hunt continues for the nation's Mastermind. The subjects are: History of the SAS; Novels of Evelyn Waugh; Formula 1, 1960-1980; and Life and Films of Charlie Chaplin.

John Humphrys asks the questions as the hunt continues for the nation's Mastermind. Subjects in this edition are: The War Memoirs of Spike Milligan, The Life and Times of Mark Antony, The Life of Lillie Langtry and The History of the Henley Royal Regatta.

John Humphrys asks the questions as the hunt for the nation's Mastermind continues. Subjects in this edition are the operas of Gilbert and Sullivan; Burgess and MacLean; the life and works of Lewis Carroll; the life and career of Nikola Tesla.

John Humphrys puts the questions to four more contenders. Subjects are the films of Alfred Hitchcock, the life and works of John Hunter, the Harry Potter books and the Welsh settlement of Patagonia.

John Humphrys puts the questions to four more contenders. Subjects are the life and works of John Steinbeck, Iron Maiden, the life of Mahatma Gandhi and English First Division football of the 1970s.

John Humphrys puts the questions to four more contenders. Topics include the life and works of Armistead Maupin, prehistoric Orkney, the films of Michael Mann, and the Finnish Winter War.

John Humphrys puts the questions to four more contenders. Topics are: the Witches of Pendle, the England Football Team in the World Cup, the life and music of Gary Numan, and Operation Barbarossa.

John Humphrys puts the questions to four more contenders. Topics are: The Avengers and New Avengers TV series, the Romanov Dynasty, the history of the London Underground, and Scottish malt whiskies.

John Humphrys puts the questions to four more contenders. Topics are: the life and music of Richard Thompson, the life and films of Ray Harryhausen, King Stephen and the plays of Shakespeare.

John Humphrys puts the questions to four more contenders. Topics are: Dante’s Commedia, Fresh Water Fish of the British Isles, RAF Bomber Command 1939-1945 and the rock band Queen.

John Humphrys puts the questions to four more contenders. Topics are: Brandon Family Novels of Peter Tinniswood, Orde Wingate and the Chindits, The Life and Career of Douglas Jardine and British Domestic Politics.

In this semi-final, John Humphrys quizzes five returning contenders, all aiming to book their place in the Grand Final. The subjects are: Glamorgan County Cricket Club, the Dark Ages in Britain, Thomas Paine, the Jack Reacher novels and the television drama Our Friends in the North.