Movies like Marlowe

Quiet young Orfamay Quest from Kansas has hired private detective Philip Marlowe to find her brother. After two leads turn up with ice picks stuck in them, he discovers blackmail photos concerning TV star Mavis Wald. She rejects Marlowe's help, and this is forcibly underlined by her gangster boyfriend. So, wonders Marlowe, is there a link between Orfamay and Mavis?