Young Girls Beware (1957)

When Raven gets out of prison after serving five years on a frame-up by gang-leader Mendetta, he kills Mendetta deciding to take over in his place. He is seen leaving the apartment by Dany Dumont, wife of a neighbor.When two of the dead-man's henchmen learn she was a witness, they abduct her, hoping to blackmail Reven when the opportunity arises. To ensure she is around when needed, they keep her in a house of prostitution.