Summit has released the first one-sheet and slightly terrifying motion poster for the horror pic Sinister.  From co-writer/director Scott Derrickson (The Exorcism of Emily Rose), the film stars Ethan Hawke as a true crime novelist who moves his family into a house where the horrific murder of an entire family took place in an effort to discover his next big story.  When he finds a box of home videos in which other families are also brutally murdered, he realizes he may have made a huge mistake by moving into the house.  I’m not the biggest horror fanatic, but I quite enjoyed Derrickson’s Exorcism of Emily Rose and the Sinister premise sounds intriguing.  Couple that with the nightmare-inducing motion poster, and I’m eager to see more.

Hit the jump to check out the posters.  The film also stars Vincent D’Onofrio and James Ransone.  Sinister opens on August 24th.

Here’s the synopsis for Sinister:

A true crime novelist (Ethan Hawke) struggling to find his next big story, moves his family into a house where the horrific murder of an entire family took place.  But after finding a box of home videos in which other families are also brutally murdered, his investigation leads him to a supernatural entity that may be placing his own family in harm’s way.