L'Étrange Monsieur Victor (1938)

Outwardly, Monsieur Victor would appear to be the model citizen. A respectable Toulon shopkeeper, he has a devoted wife and is courteous and considerate to all who know him. However, beneath this veneer of respectability hides a notorious receiver of stolen goods, who trades with hardened criminals. Victor manages to keep up his double life without any difficulty until the fateful day when one of his partners in crime threatens to expose him. Fearing a scandal, Victor kills the crook in a moment of panic, using a shoemaker's tool. Naturally, the murder is blamed on a local shoemaker, who is sentenced to ten years' hard labour. Seven years later, the former shoemaker reappears in Toulon, having escaped from prison. The first person to recognise him is Monsieur Victor...