Some disturbing violent content but only few scenes actually involving blood (hard to see except for second body discovery sequence) and only one scene of mild gore ) neck abrasions, second and third inspection sequence (third sequence precedes character's actual death), also brief but fairly clear blood geyser visible with an end sequence death scene.
The film centers on a supernatural 'hangman' from a play who is killing off teens trying to ruin the set of a newer version of the play.
We see (during a play, through a camera) a young man who dies because of a fault set piece. He gets strangled by a noose. This is seen from a distance.
An invisible force chokes a girl and we later see the abrasions on her neck. Throughout the movie the abrasions worsen.
The same invisible force ties a noose around a teen's neck and hoists him into the air, killing him as his neck snaps upon reaching the top which cuts him out view by the blackened area leading up to the ceiling.
Body of the janitor is found dangling from the ceiling of a crawlspace area, minute traces of blood on ground near his dropped watch. Girl's neck wounds are bloody, scalded and beginning to boil over the course of the movie.
Relatively unseen but girl dragged away is subsequently killed as invisible hangman bashes her against slamming exit doors, brief flash line of blood of her blood as door slams closed.
Bodies of teenage boy and girl discovered hanging in boardwalk rafters and amongst large pipe faucets, girl's feet are shown dangling (no blood) however boy's face comes into focus as another boy comes inches from his face with camera and reveals small traces of bloody scratches, lines of blood around neck, blood on either side of his lips and bruises on his discolored dead face.
Male officer is killed as via telekinesis or by the throw of an invisible hangman is violently flung at a hallway wall, brief spray of blood from the back of his head upon impact as he dies instantly.