This new brain game invites contenders to take the stand and defend their claim to the title of Mastermind of the United Kingdom
They have two minutes in which to establish their knowledge of a chosen subject, with a further period to consolidate their position by answering questions right across the board.
Tonight's contenders are drawn from the London area, and the programme comes from the University of Birmingham.
Interrogator Magnus Magnusson
Cast of this episode
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