The British system of interrogation has always been distinctly different from other countries. Subtler, quieter and far more devious than its contemporaries, it has been admired by those who have inadvertently succumbed to it. So much so that the Nazis adopted some of the British methods in their own intelligence operations. During World War II, the system became highly developed and vast numbers of people were employed in the collating and recovery of information. Vital data about military advances such as the Enigma machine and the Tiger Tank were wrung from prisoners not by force but by trickery and deceit. The eccentric, quirky, but also very successful, wartime interrogation methods of the British are revealed in this book, including their triumphant discoveries and also their occasional disastrous mistakes.