It's 1972 and the Cold War is far from over. Britain is being ravaged by industrial unrest and terrorism, and Serena Frome, in her final year at Cambridge, is being prepared for life in the MI5. Sent on a secret mission - Operation Sweet Tooth - Serena encounters a promising young writer who she begins to find herself falling for. Can she maintain her cover? And more importantly who is playing who? 'Gloriously readable and, at times, wickedly funny' Arminta Wallace, "Irish Times"