Spring 1941: After 10 years spying for the Americans, Wolfgang Stahl disappears during a Berlin air raid. The Germans think he's dead. The British know he's not. But where is he? MI6 convince US Intelligence that Stahl will head for London, and so Captain Cal Cormack, a shy American 'aristocrat', is teamed with Chief Inspector Stilton, fat, 50, and convivial, and between them they scour London.

Berlin, 1928, the dying days of the Weimar Republic shortly before Hitler and the Nazis came to power. It was a period of decadence and excess as Berliners - after the terrible slaughter of WWI and the hardships that followed - are enjoying their own version of Babylon. Bernie is a young detective working in Vice when he gets a summons from Bernard Weiss, Chief of Berlin's Criminal Police. He invites Bernie to join KIA - Criminal Inspection A - the supervisory body for all homicide investigation in Kripo.

Ex-policeman Bernie Gunther thought he'd seen everything on the streets of 1930s Berlin - until he turned freelance and he is sucked further into the grisly excesses of Nazi subculture. The year is 1936 and Berlin is preparing for the Olympic Games. Some of Bernie's Jewish friends are beginning to realise that they should have left while they could, and Bernie himself has been hired by a wealthy industrialist to investigate two murders that reach high into the Nazi Party.

Meret Voytek, pupil of professor Viktor Rosen, a Jew in exile from Germany, watches as Vienna comes under Nazi rule and the repercussions for the Jews. Across Europe, Dr Karel Szabo, a Hungarian physicist, has been interned on the Isle of Man. Rescued by the Americans, they recruit him in building an atomic bomb. Moving from Vienna and Auschwitz to the deserts of New Mexico to London, fate carries the enemy alien, Szabo and gentile Voytek, across the battlefields of the destructive war.

A new breed of gangster appears and the battle for the East End begins. Chief Superintendent Frederick Troy is quite literally caught in the crossfire, when he is hit by the blast from a car bomb.