'Sinister' Movie Poster: 'See Yourself Sinister' App Turns You Into Movie Monster (EXCLUSIVE)

With a genuinely creepy-looking monster and some unnerving scares involving photos that deceive your eye, "Sinister" could be a surprising October chiller. In the film, Ethan Hawke stars as a true-crime novelist who moves his family into a house where the previous tenants were murdered. Investigating leftover items of the deceased family, he discovers a supernatural demon that lives inside old pictures and home movies -- and may threaten his family next.

The demon is known as Bagul, and you m...