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.
as Jeanne Masson
as Inspector Pierre Leblanc
as Cortedani
as Inspector Martial
as Policeman
as Mobster
as Doctor
as Mobster
as Inspector
as Gaby
as Chemist
as Roger Masson
as Raoul
as Albert
as 'Dédé le fada'
as Brasier
as Commissioner Didier
as The witness
