Twentieth-century spies

"This insightful book delves into the dark secrets of the most notorious spies of the twentieth century, bringing together their stories for the first time into one accessible....volume. It includes: Sidney Reillly, considered by many to be the greatest spy of the century and an inspiration for Ian Fleming's James Bond; The "Atom Bomb" spy Klaus Fuchs, who gave the Russians atomic capability; George Blake, who betrayed over forty British agents and is still alive in Moscow"-- Back cover.