Tonight's four contenders all come from the south and west of England and compete in the drama theatre of the College of St Mark and St John, Plymouth.Mira Little (retired) The life and films of Greta GarboSteve Priestley (House of Commons clerk) Sino-Soviet relations, 1949-1976Joy Thwaytes (lecturer and writer) John Stow and his survey of LondonGeoffrey Dearnley (retired headmaster) The life and plays of J.B. Priestley