A new horror movie is set to make its world premiere at the South by Southwest film festival titled Honeymoon, and a teaser trailer for it has been released online.

The movie stars Rose Leslie, who plays Ygritte on HBO’s Game of Thrones and is also known from Downton Abbey, and Harry Treadaway, who starred in Control and will play Dr. Victor Frankenstein on the upcoming Showtime series Penny Dreadful.

You can read a full synopsis for Honeymoon and check out the teaser trailer below.