In an attempt to stem the heroin trade from Iran, a group of narcotics agents working for the UN inject a radioactive compound into a seized shipment of opium, in the hopes that it will lead them to the main heroin distributor in Europe. Along the way, they encounter a mysterious woman doing her own investigating of the smuggling operation. Together, they follow the trail as it leads them through the back alleys and luxury resorts of Europe.

Starring:

Amedeo Nazzari, Angie Dickinson, Anthony Quayle, Barry Sullivan, Bessie Love, Bob Cunningham, Charles Millot, EG Marshall, Eli Wallach, Georges Douking, Georges Geret, Gilbert Roland, Harold Sakata, Howard Vernon, Hugh Griffith, Jack Hawkins, Jean-Claude Pascal, Jocelyn Lane, Laya Raki, Luisa Rivelli, Marcello Mastroianni, Marilù Tolo, Michel Thoma

Genre:

Crime, Drama, Mystery