The climax of Mastermind 1985 takes place at Robinson College, Cambridge. In January 48 contenders set out to see who could win the coveted Caithness glass trophy. Tonight just the final four are left to do friendly battle to receive that trophy from the Chairman of the BBC Stuart Young. Clive Bettington (solicitor) The British Raj, 1899-1948 Ian MacKillop (pharmacy technician RAMC) History of the Labour Party since 1945

Roger Stein (schoolteacher) The works of John Le Carre

Ian Meadows (hospital driver) The English Civil War, 1642-7