Shakedown (1950)

Jack Early is a go-getting photographer who is determined to make a name for himself. He manages to be hired by a major San Francisco newspaper and from then on he is prepared to do anything to achieve his aim. Undaunted by anything, Early sinks into the underworld where gang boss Nick Palmer takes him under his wing. Thanks to him, Jack can take sensational snapshots of heisters at work. Which is not enough for him. Soon, thinking he is protected by the compromising photos he keeps taking, he starts manipulating and double-crossing hoodlums, including his mentor Nick Palmer.