1955 film by René Jolivet

In Bourganeuf, an old maid, Charlotte Bourdier, confesses to Marie Chassagne that she has forged a sentimental intrigue by correspondence with the presenter of the Radio Circus, Zappy Max. Marie agrees to meet him when he comes, but she in turn falls in love with him, who confesses his love to her.

On the run from international police, Special Agent Lemmy Caution arrives in the South of France and soon becomes embroiled in a scheme with the infamous gangster Siegella. Whilst seeming to co-operate with the underworld boss, Lemmy is secretly acting for the FBI, and intends using Miranda Van Zelden, a wealthy heiress, as bait to trap a gang of crooks and put an end to Siegella's exploits...