Tonight Mastermind reaches the semi-final stage. Four of the early first-round winners compete in the imposing setting of the great transept of Lincoln Cathedral.
Alistair Hanson (diamond valuator) The life and novels of Thomas Hardy
John Sutherland (retired civil servant) The life and times of John Paul Jones , 1747-1792 Jill McFatridge (area reporter) The 'Flashman' novels of George MacDonald Frazer
Ian Potts (railway signalman) The life and times of Alexander the Great
Cast of this episode
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