A groundbreaking World War II narrative wrapped in a riveting detective story, The Devil’s Diary investigates the disappearance of a private diary penned by one of Adolf Hitler’s top aides—Alfred Rosenberg, his “chief philosopher”—and mines its long-hidden pages to deliver a fresh, eye-opening account of the Nazi rise to power and the genesis of the Holocaust.

An influential figure in Adolf Hitler’s early inner circle from the start, Alfred Rosenberg made his name spreading toxic ideas about the Jews throughout Germany. By the dawn of the Third Reich, he had published a bestselling masterwork that was a touchstone of Nazi thinking. His diary was discovered hidden in a Bavarian castle at war’s end—five hundred pages providing a harrowing glimpse into the mind of a man whose ideas set the stage for the Holocaust. Prosecutors examined it during the Nuremberg war crimes trial, but after Rosenberg was convicted, sentenced, and executed, it mysteriously vanished.

Drawing on Rosenberg’s entries about his role in the seizure of priceless artwork and the brutal occupation of the Soviet Union, his conversations with Hitler and his endless rivalries with Göring, Goebbels, and Himmler, The Devil’s Diary offers vital historical insight of unprecedented scope and intimacy into the innermost workings of the Nazi regime—and into the psyche of the man whose radical vision mutated into the Final Solution.