Mastermind - Season 2026 Episode 18 -

In another heat, four contenders take on the famous black chair, answering questions on their chosen specialist subjects to earn a place in the semi-finals.Clive Myrie hosts and asks questions on the Welsh politician Aneurin Bevan, the musicals of Stephen Sondheim, the classic television series Upstairs, Downstairs, and Jigoro Kano and the origins of Judo.