Claude Brasseur plays a villain on the run from both the police and the mob. Good atmosphere in the Paris by Night, including deserted factory, Les Halles market and an empty theatre.

The first film adaptation of Jerry Cotton. FBI agents Jerry Cotton and Phil Decker are tracing a group of six murderers. Disguised as a vagabond Jerry Cotton infiltrates the gang. Kitty, the leader's girlfriend, soon becomes Jerry's most important helper. With her help, he's able to prevent a bomb's explosion in a school. The deadly attack on a rich collector he can not prevent. The gangsters flee with the loot and a hunt to the death begins ...