
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.
Inspector Pascal

Thérèse

Marny

Dalbret

Eliane Roy

Mireille

Melor

The hunter

Mrs. Lalorgue
Legal

Bernard

Unknown Role
The apprentice
Unknown Role

Planquine

Marcheau

Toby

Self
(uncredited)

(uncredited)

(uncredited)

(uncredited)

Louise Chabot (uncredited)

Journalist Deval (uncredited)
