CIA operative Nina Abrams is an invaluable asset to the Moscow office—an American who can think like a Russian. As the daughter of Stalin’s favorite portraitist, she never underestimates the Kremlin’s lethal games. But when her four-year-old daughter, Katie, disappears in a bloody kidnapping, grief paralyzes Nina, and the Agency sends her home.

Seven tough years later, her heavily medicated father’s shocking last words link Katie’s disappearance to missing nuclear warheads still powerful enough to start World War III. Nina’s doubtful until vandals ransack her father’s studio and leave a grisly reminder of that horrific night in Moscow. So she embarks on one harrowing final mission: Find the bombs that might provide closure about Katie—and maybe save the world, too.

But Nina’s not the only one after the loose nukes, and her competition is deadly.