Two-time loser Nick Bianco is caught during an armed robbery and pressured by the Assistant District Attorney to squeal on his cohorts. Nick refuses, but after his wife commits suicide and his daughters are put in an orphanage, he relents and goes to work for the prosecutor. He gets paroled and straightens out his life, but when the D.A. needs him to roll over on Tommy Udo, Nick finds he has to deal with the psychopathic killer himself.
