New Year's Eve, 1945. The assassin steps out of the Atlantic Ocean in the middle of a raging nor'easter. Cool and efficient, she's a weapon of war superbly trained in the ancient arts of subterfuge and murder. And even though she's outnumbered, she's got one major advantage: No one knows she's coming. Professor Mikhal Lammeck's specialty is the history and weaponry of assassins. But even Lammeck is caught off guard when the Secret Service urgently requests his help: A gruesome double murder and suicide in Massachusetts has set off alarm bells. It's only a hunch, but all too soon Lammeck suspects the unthinkable. In the waning days of the war, someone wants one last shot to alter history. An assassin is headed to Washington, D.C., to kill the most important soldier of them all: the U.S. commander in chief. As Lammeck and a killer at the top of her profession circle the streets of the capital in the hunt for FDR, one of them will attempt to kill the world's most powerful man; the other, to save him. And between them, for an instant, history will hang in the balance.