Confined mostly to the dimly lit mortuary, the movie turns its limited setting into an advantage, using shadow, sound, and the slow unspooling of clues to amplify dread. Cox anchors the film with a measured, haunted performance as a seasoned pathologist confronting phenomena his medical training cannot explain; Hirsch brings anxious humanity, making the pair’s relationship—professional, familial, and increasingly desperate—a compelling emotional spine to the supernatural unraveling.