A secret agent is summoned by the head of a counter espionage organization, to Trieste where he is to unmask a potential enemy operating in Venice.
Jean-Pierre Aumont
Carla Del Poggio
Fernand Ledoux
Marcel Herrand
Nicolas Vogel
Roldano Lupi
Attilio Dottesio
Gianni Rizzo
John Kitzmiller
Louis de Funès
Sophie Sel
Tancredi
