Autumn 1937: War is coming to Europe. French and German intelligence operatives are locked in a life-and-death struggle on the espionage battlefield. At the French embassy, the new military attaché, Colonel Jean-François Mercier, a decorated hero of the 1914 war, is drawn into a world of abduction, betrayal, and intrigue in the diplomatic salons and back alleys of Warsaw. At the same time, the handsome aristocrat finds himself in a passionate love affair with a Parisian woman of Polish heritage, a lawyer for the League of Nations. Colonel Mercier must work in the shadows, amid an extraordinary cast of venal and dangerous characters -- Colonel Anton Vyborg of Polish military intelligence; the mysterious and sophisticated Dr. Lapp, senior German Abwehr officer in Warsaw; Malka and Viktor Rozen, at work for the Russian secret service; and...