L'Uomo del Colpo Perfetto plot
A large amount of jewelry is stolen on the road from Beirut to Amsterdam. Detective Steve Norton is tasked with solving the case. He flies to Lebanon to investigate the death of diamond trader Van der Oven. He discovers that the man did not take his own life, as everyone thought, but was eliminated by his French colleague Dupuis. The victim had found out that Dupuis was involved in that jewelry theft. Norton follows Dupuis to Malaga and discovers that the diamonds are in the hands of Gustav, apparently Dupuis' butler, but in reality the head of the gang...