Andy Day, Ann Cleeves, Tom Rosenthal, Robert Peston

CBeebies' Andy Day, writer of the Shetland crime series Ann Cleeves, actor and comedian Tom Rosenthal and BBC economics editor Robert Peston take on the Mastermind chair. They answer questions on the Back to the Future films, the Shetland Islands, flags of the world and David Bowie 1966-1976.