John Humphrys quizzes four more semi-finalists in Britain's toughest quiz. The subjects are the life and career of Bobby Charlton, the Roman Republic to 43 BC, the life and poetry of Wilfrid Owen and TV series The Day Today.
See all episodes from Mastermind
See all broadcasts of Episode 27 (1)
Who are the winners of the Mastermind trophy since the series began in 1972?
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