A spy thriller classic, soon to be a major motion picture starring Rami Malek, Rachel Brosnahan, Caitriona Balfe, and Laurence Fishburne. "A taut, chilling plot and a protagonist as memorable as one of Len Deighton's, or le Carr 's Smiley."--The New York Times Book Review Charlie Heller is an ace cryptographer for the CIA, a quiet man in a quiet back-office job. But when his fianc e, Sarah Diamond, is murdered by terrorists...