“Crescent City” (** out of four) was a lukewarm suspense melodrama about a group of cops (Terrence Howard, Esai Morales, Alec Baldwin, Nicky Whelan, and others) on the trail of a serial killer in which everyone is a suspect including each other and they have to violate their own moral code and conduct and start investigating one another to learn who to trust. Good cast does what they can with middling and weak material. Atmospheric lensing by Alex Salahi is a definite standout. With a stronger script and more original story, Morales and Howard could make a snappier team.