Alliance Films has released a seriously creepy trailer for Blumhouse Productions’ Sinister, a supernatural thriller that stars Ethan Hawke as a true crime novelist who discovers a box of film reels depicting a series of brutal family murders at his new home.

Things only get worse when it becomes apparent that the killer is a member of heavy metal outfit Slipknot… or a something not human. The film is directed by Scott Derrickson and costars Vincent D’Onofrio (Chained), Juliet Rylance (Animal) and James Ransone (“Treme”).

Sinister arrives in theaters on Oct. 12.

Peep it: