Albert is an eccentric inventor of missiles who comes under fire from his investors when his first prototype explodes. Even his sympathetic mistress has her doubts, as Albert lashes out in a verbal tirade condemning those of little faith in his genius.

"Le Dabe" retired many years ago and now he lives in the Tropics where he owns stables and horses. He is a very rich man. He was the king of all money counterfeiters. He is contacted from Paris to organize a new job. He says no. But when he finds out the the currency that should be counterfeited is the Dutch florin, he accepts immediately. He retired after having counterfeited 100 florin notes just before the Queen Wilhelmina retired them from circulation. He flies to Paris. But the gang is not to be trusted, at least not all of them.

Le propriétaire d'une modeste galerie de peinture parisienne (Paul Frankeur) se trouve impliqué dans une affaire de faux tableaux. A l'escroquerie va s'ajouter un meurtre...
Ce polar à la française des années 1950 est également connu sous le titre "Reproduction interdite". Annie Girardot y interprète l'un de ses premiers rôles.
Quelques lieux de l'action :
- un atelier de peintre
- le cinéma Pathé-Palace
- un cabinet d'expertise d'objets d'art
- un cimetière
- une boucherie