Game of Thrones star Rose Leslie is looking to toss her fiery hair and dazzle you with her American accent in her new horror/sci-fi flick Honeymoon, where she plays a newlywed who returns from a night walk in the woods, a changed woman. She really dominates a role where you love her and are terrified of her at the same time. Check out the synopsis for the film, followed by the first trailer.

Young newlyweds Paul and Bea travel to remote lake country for their honeymoon, where the promise of private romance awaits them. Shortly after arriving, Paul finds Bea wandering and disoriented in the middle of the night. As she becomes more distant and her behavior increasingly peculiar, Paul begins to suspect something more sinister than sleepwalking took place in the woods.

Trailer: Honeymoon

Honeymoon starring Rose Leslie, Harry Treadaway, Hanna Brown, Benjamin Huber is slated to hit theaters September 12th, 2014.