Tony Livesey, Ava Vidal, Monty Halls, Reverend Richard Coles

John Humphrys presents the celebrity version of Britain's toughest quiz. Four more celebrities take on the Mastermind challenge as presenter Tony Livesey, comedian Ava Vidal, presenter Monty Halls and pop-star turned broadcaster Reverend Richard Coles answer questions on the Jam, Buffy the Vampire Slayer, Jacques Cousteau and EF Benson's Mapp and Lucia novels.