Tonight Mastermind reaches the semi-finals.
The venue is St Andrew's College of Education, Bearsden, Glasgow. Henry Boettinger
(consultant and author) The life and work of Thomas Edison; Kenneth Gray
(retired schoolmaster) The life and works of Rachmaninov; Steve Hall (civil servant) The life and works of Mark Twain; Roy Bailey (film producer) The Poldark novels of Winston Graham
Cast of this episode
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