This important new book examines in some detail the law relating to confessions, unlawful evidence, and the 'right to silence' in the police station. The author also looks at the principles which lie behind this branch of the law. As well as his close examination of the English position, the author also looks at alternative approaches taken by Scottish, Irish, Australian, Canadian, and American legal systems. There is no other book written in English which gives such systematic treatment to this subject.