It's 1942, the middle of WWII. New York City is filthy with German spies. FBI agent Thomas Leopard is drinking and suicidal, selfish, loathsome and hateful. And he has a killer loose in his city, the German spy "Der Tiger", who has been dormant up to that point of the war. Now the Abwehr, the intelligence branch of the Nazi military, has a special mission for its most lethal and dangerous spy.