Billy Hill was the most powerful Kingpin in Britain's post-war underworld, but the secret behind Hill's empire is little known.

Known for his dubious medical practices and shady financial deals, the Nazi occupation liberated Dr. Marcel Petio's murderous instincts, enabling him to embark on a killing spree.

Racial tension in pre-war America and WWII are spotlighted.

In Nazi Germany and Britain, the blackouts were a necessity for defending lives and property from enemy bombing but proved a useful tool for predatory criminals, allowing two serial killers who used the absolute darkness to prey upon victims.

When the U.S. military takes over the German Kronberg castle in 1945, an affair between a U.S. Army captain and Air Force officer results in an elaborate treasure heist.

Incensed by their treatment under Mussolini's regime and anxious to re-establish their European criminal network, Mafiosi including incarcerated kingpin Charles "Lucky" Luciano offered their full support to American intelligence officers.