"A serious and thoughtful discussion of the world of secret intelligence . . . a necessary read."
-- Sir John Scarlett, Chief, Secret Intelligence Service (MI6) 2004 - 2009

"What I hope distinguishes our intelligence activity from that used in the service of totalitarian regimes is in the ethical values that our intelligence activity seeks to defend and must therefore embody. The reader will understand that after studying this book."
-- Professor Sir David Omand GCB, former UK Security and Intelligence Coordinator

The Psychology of Espionage, Spies, and Spying tells the story of the people involved in spying: the human sources (agents) who betray their governments or terrorist groups and the professional intelligence officers who manage the collection and reporting process. There are in-depth stories of spies who changed the course of history, together with a rigorous psychological analysis of the personality and motivation of those involved in spying.

This is the second, fully revised and extended edition of The Psychology of Spies and Spying, which was published in 2022.