The brother of Jeanne Masson, a young nightclub singer, has been murdered by Brasier, a criminal who pretends to be a respectable man. Jeanne has resolved to avenge her brother but she just cannot take action herself. The way she finds is to ask police detective Pierre Leblanc to help her do it. Pierre gives his agreement and starts following the trail. He soon finds out that Brasier belongs to a gang whose boss, Cortedani, has ordered the murder.
Cast
Anne Vernon
Jeanne Masson
Maurice Régamey
Inspector Pierre Leblanc
Aimé Clariond
Cortedani
Alfred Arlais
Unknown
René Blancard
Inspector Martial
Yvonne Dany
Unknown
Gil Delamare
Unknown
Jo Dest
Policeman
Pierre Goutas
Mobster
François Joux
Doctor
Jean-Jacques Lécot
Mobster
Marcel Melrac
Inspector
Simone Michels
Gaby
Robert Moor
Chemist
François Patrice
Roger Masson
Raymond Raynal
Raoul
Nicole Riche
Unknown
Pierre Sergeol
Albert
Jean-Marc Tennberg
'Dédé le fada'
Marc Valbel
Brasier
André Valmy
Commissioner Didier
Charles Vissières
The witness
