Angel Heart (1987)

Harry Angel accepts what looks like a routine missing persons gig from an ominous benefactor, completely unaware that every lead he pulls tightens a noose around his own neck. His clumsy, heavy-handed inquiries leave a trail of slaughtered witnesses and ritualistic butchery in his wake across humid New Orleans. By forcing open doors that were meant to stay shut, Angel orchestrates his own damning downfall.