Mastermind S9, E17

A long-running series in which members of the public sit in a black chair to answer questions on a specialist subject and general knowledge.

Cast:Magnus Magnusson , Charles Key , Paul Ponder , Daniel Appleby , Margery Elliott , Patricia Owen , Nancy Wilkinson , Beryl Leatham Thomas , Joan Taylor , Fred Housego , John Laurence Keogh , John Colman , Reginald Drew , Archie Orton , Douglas Gibson , Michael York , Rosemary Bown , Richard Snailham