Mastermind Season 46, Episode 4

BBC One · Friday, August 30

John Humphrys presents the fourth heat of the classic quiz where contenders take the famous black chair under the glare of the spotlight and the ticking clock in an attempt to become the next Mastermind champion. Tonight’s specialist subjects are national flags, the life of Napoleon Bonaparte, The Chronicles of Narnia and the life and career of Andre Agassi.