There are 12 heats in the first round of Mastermind and tonight's match from Scotland brings us to the half-way stage.Strathclyde University in Glasgow provides the setting for tonight's programme.The contenders are:ANTHONY KERR, author and translator - The Common MarketWILLIAM CHALMERS, solicitor - The Life and Works of George OrwellJAMES ROBERTSON, lecturer - The City of RomeMARTHA IRVINE, court clerk - History of Costume 1600 to present day