Approximately four minutes of quick-fire specialist and general knowledge questioning confronts four doughty contenders for this year's Mastermind title.
Memory, clarity, concentration, tactics, and nerve are all required in this formidable challenge to the intellect.
Tonight's contenders are: DENNIS BIRD, Civil Servant
JACQUELINE PEARSON , postgraduate student
MICHAEL MUNN , lorry driver
MARTIN CABOURN SMITH , Chartered Accountant