
A bus conductor gets dressed for work in the morning, goes to the toilet, where he is killed by a bomb. The Commissioner and his fat, bumbling assistant, Inspector Charbonnier are put on the case. After interviewing friends, wives, colleagues, and spying on strangers who might be connected, our heroes trace the assassin down to a mental institution where, it seems, the murder victim has been an inmate for the last three years...
L'inspecteur Charbonnier

Le commissaire Pichard

Gazul

Gwendoline

René

Barbocelli

Joseph Ordure
La mère du médecin

L'entraîneur

Odette Jeandrin

Le psychiatre

Mme Piazzorossicelli

Unknown Role
Le majordome

Le boxeur

Unknown Role
Angelo

Rose

Le joueur d'orgue de barbarie

Le concierge

Unknown Role
un inspecteur (uncredited)
