The story of spies, espionage and stealing secrets. It begins with the origin and development of modern security agencies, how they began and what they now do. The title also explains how the world's weapon secrets were stolen and sold to unfriendly countries and rogue states. Questions covered include: Who were these spies, what did they steal, what impact did they have, did they change the balance of power and what happened to them after they were discovered? It includes the exploits of low-level agents, sleepers, and dramatic prisoner exchanges between countries right up to the present with a foretaste of the future spy world.