Most noir fans will know this for the once-only combination of all time genre greats, Sterling Hayden and Gloria Grahame. And they are the best part of film; he is a tough cop sacked for leaning on a murder suspect with powerful political friends, and she is a pitiful cantina chanteuse in love with the wrong guy.
Gene Barry is also interesting as the connected criminal who obsesses them both. Hayden because he is convinced the superficially upright citizen is a sociopathic cop killer. And Gloria because she wants to marry the scumbag even though he treats her so bad. And he's already married! He makes a potent villain; slippery, entitled, whiny….
In fact he seems like a model for Scorpio in Dirty Harry (1971). He gives the film most of its pull because we want to see him taken down, badly. The ex-detective goes vigilante and tracks the accused to a Mexican border town where he gets the shop soiled torch singer to switch sides.
This clearly draws on GG’s bad girl role in The Big Heat, a year earlier, but here she’s a shabby pushover who never got any breaks. The story is fine and the scuzzy, lowlife location gives the film atmosphere. It’s just a B-picture by a director who mostly did tv. But the three stars make it feel like something more.