A series of crimes is being perpetrated around a famous singer. Strangely, during each of the crimes, the artist's voice is heard humming his favorite song. Suspicions lead to a chase through a nocturnal Paris, ending in a disused theater where the assassin has lured his final victim.
Bernard Blier
Sophie Desmarets
Jacques Pills
Jean Davy
Ginette Baudin
Annette Poivre
Jacques Morel
Jacques Dynam
Ariane Murator
Robert Le Fort
André Wasley
Belaieff
Sylviane Claudel
Denise Benoit
Marcel André
Jean Wall
Louis Salou
Jacques Hélian
Odette Barencey
Mercédès Brare
Léonce Corne
Luce Fabiole
Nathalie Nattier
Émile Riandreys