A gang of robbers takes possession of a load of diamonds.. Only one of them, Mark Lemmon, is arrested and sentenced to life imprisonment. But before being captured, the gangster had managed to hide the loot in a sewer. Five years later, Mackenzie, an insurer, pretending to be a mafia boss, assigns three petty criminals to arrange his escape. Once free, Lemmon finds the booty but now he has to deal with his new 'partners'.
Al Cliver
as Michael Teague
Carole André
as Nicky Stone
Claudine Auger
as Maggie Vanderberg
William Berger
as Mackenzie
Francesco Casaretti
as
Frank Derosa
as Nick
Tony Di Mitri
as Dr. Alfred Houseman
Mariangela Giordano
as Sandro's lover
Edmund Purdom
as Professor Vanderberg
Gabriele Tinti
as Sandro Vincenzoni
Fausto Tozzi
as Mark Lemmon
