The New Spymasters

Revelatory, deeply informed, subtle

Financial Times

A manual of modern espionage. Farewell George Smiley. The targets are new, the methods different, the technology hyper. Only the purpose remains - forewarning

Frederick Forsyth, author of 'Day of the Jackal'

There are many books on spies and spying, but few as perceptive or rigorous as this. Full of revelations . . . A very enjoyable read. Should be on the shelves of anyone interested in the world we live in, the threats we face, and those who are charged with keeping us safe

Jason Burke, author of 'Al Qaeda' and 'The 9/11 Wars'

I urge spymasters new and old - but more importantly those who want to understand the role of espionage - to read this remarkably accurate and detailed account of the CIA's transition from Cold War to ISIS War, from nuclear attack to hacker attack. Stephen Grey nails the story in this exceptionably readable book

John Macgaffin III, former Associate Deputy Director for CIA Operations

A lucid, well-written analysis

Spectator

Exceptional. A blueprint for productive, sophisticated espionage in the age of Islamist terror

Daily Telegraph

Draws on an impressive array of interviews with serving intelligence officers. A page-turner for those outside the secret world, and a thought-provoker for those inside it

The Times

Valuable and thought-provoking, breaks new ground. A good manual for the spy cadets of the future, the dangers they face and traps they may well fall into

The Guardian