The inspiration for Michael Frayn's Tony Award-winning play Copenhagen, Heisenberg's War tells of the interplay between science and espionage, morality and military necessity, and paranoia and cool logic that marked the German bomb program and the allied response to it. On the basis of dozens of interviews and years of research, Thomas Powers concludes that Werner Heisenberg, who was the leading figure in the German atomic effort, consciously obstructed the development of the bomb and in a famous 1941 meeting with his former mentor Neils Bohr in effect sought to dissuade the Allies from their pursuit of the bomb.

"Full of fascinating characters, deeds of heroic daring ... a powerful book."—New York Times
"Provocative ... gripping."—New Yorker
"Superbly researched and well-written."—Time Magazine