Four for the Morgue (1962)

This episodic detective film presents the cases of two New Orleans gumshoes In once case they preserve the good name of a patrolman who is suspected of murdering a kleptomaniacal socialite They then find the murderer of a bank robber whose corpse was found in a swamp After that they catch a psycho hitchhiker Finally they bring in the killer of a cabbies wife and her little dog