Kelly Somers, Adam James, Thanyia Moore and Steve Brown are put to the test in the classic quiz where celebrities brave the famous black chair.
Celebrities take on the ultimate intellectual challenge.
John Humphrys presents the celebrity version of Britain's toughest quiz.
More celebrities brave the famous black chair.
Episode 1
Episode 2
Episode 3
Episode 4
Episode 5
Episode 6
Episode 7
Episode 8
Episode 9
Episode 10
Episode 11
Episode 12
