West has created a true homage to the slasher film genre with clear references to “Texas Chainsaw Massacre,” “The Shining” and even Alfred Hitchcock’s “Psycho.” This thriller prolonged tension through its excellent cinematography, editing and sound design. Whether it was a rusty nail about to be stepped on by bare feet or an alligator swimming next to Goth in the lake. The camera always lingered for just the right amount of time. Enough to make the gentlemen in the row behind me scream, “No, get out of there!” or “Turn around!” As Ortega’s blood-curdling screams were trapped in a basement, a southern preacher’s sermon on sin was edited over the gory slaughter of her friends.