In the winter of 1933, a mild-mannered State Department clerk named Wilbur Carr processed a routine visa application that would have put Adolf Hitler's closest financial architects inside the Roosevelt White House — and the only thing that stopped it was a petty interdepartmental feud over office supplies. The ripple effects of that stamped denial quietly shaped the next thirty years of American foreign policy, the atom bomb program, and a Hollywood career you'd never guess was connected.