In the vein of the “Pirates of the Caribbean” films, comes a much feebler and unsuccessful attempt to spin another park attraction into celluloid gold.

Stillwater is one of those films that feels like it hasn’t got anything substantial to say, but there is something at work beneath the surface that lingers well after the last reel has run.

M. Night Shyamalan’s latest hybrid of drama, horror, and suspense is a turgid tangle of a story that offers very little of anything worthwhile in the various genres it contends to belong to.