In a quiet graveyard in rural England a well-dressed man is digging at a tomb. He is careful not to disturb the occupant?s slumbers as he removes a deeply buried package. He recovers the find and drives away. Shortly afterwards, another man also approaches the grave. He, however, is disappointed. This nerve-tingling operation is part of a cat-and-mouse plot played out between the police and the possessor of a rare and valuable Enigma machine that had been stolen from Bletchley Park. This bizarre episode in Bletchley Park?s history is as mysterious as the activities of the wartime codebreakers who worked there. In this gripping detective story Christine Large, Director of Bletchley Park, reveals the theft?s inside story and explains exactly how the person in possession of the machine was caught.