Brian Cox and Emile Hirsch star in this supernatural horror directed by André Ovredal. When a violent murder leaves behind an unidentified body, father and son coroners Tommy and Austin Tilden (Cox and Hirsch) are tasked with finding a cause of death for the local sheriff by the next day. Forced to work through the night, Austin cancels plans with his girlfriend Emma (Ophelia Lovibond) in order to help his father with the mysterious corpse. However, not long after starting their examination, a number of disturbing phenomena occur which leave Tommy and Austin facing a desperate fight to survive the night. The cast also includes Olwen Catherine Kelly, Parker Sawyers and Michael McElhatton.