NEW YORK TIMES BESTSELLER • The celebrated author of Double Cross and Rogue Heroes returns with a thrilling Americans-era tale of Oleg Gordievsky, the Russian whose secret work helped hasten the end of the Cold War.
“The best true spy story I have ever read.”—JOHN LE CARRÉ
Named a Best Book of the Year by The Economist • Shortlisted for the Bailie Giffords Prize...

"The gripping biography of a notorious Cold War villain--the German-born British scientist who handed the Soviets top-secret American plans for the plutonium bomb--showing a man torn between conventional loyalties and a sense of obligation to a greater good"--