Overview: The Great Hall of the University of Nottingham is the setting as four contenders compete for one of the remaining places in the semi-finals of Mastermind 1986. Gordon Barnes (gas plant operator) The history and development of firearms 1500-1900 Mary Turner (schoolteacher) Life and career of Laurence Olivier Sean Howley (RAF technician) The First World War 1914-1918 Fred Singleton (retired university lecturer) The history of the Yugoslavs 1900-1945