Did you have a spy in the family, an ancestor who was involved in espionage at home or abroad? If you have ever had any suspicions about the secret activities of your relatives, or are curious about the long hidden history of Britain's secret services and those who served in them, this is the book for you. Phil Tomaselli's fascinating guide to over 200 years of British spies and spying takes the reader on a journey through the twilight world of the secret intelligence organizations Britain has run since the time of the French Revolution to the modern day, and it shows where their records can be found.