Another four contenders take to the black chair, answering questions on their chosen specialist subjects to earn a place in the semi-finals. Clive Myrie hosts an episode where the specialist subjects are Stephen Hawking, the music of Radiohead, Theda Bara and the Richard Sharpe novels of Bernard Cornwell.

Clive Myrie asks the questions as four more contenders take on the black chair under the spotlight and the ticking clock in an attempt to become the next Mastermind champion. The specialist subjects are Catherine the Great, Wallace and Gromit, Egon Schiele and hyenas.