After losing their daughter in a tragic accident, shattered couple Ray (Nicolas Cage) and Maggie (Robin Tunney) purchase a motel in the middle of nowhere in the hopes of starting a new life.   
 
But Ray begins to notice strange goings-on and starts to piece together the history of a bizarre murder associated with the motel.  Poking around in a basement one day, Ray discovers a crawl space, which leads to a two-way mirror into one of the rooms.  As he becomes obsessed with the unusual activities that happen beyond the looking glass, his marriage, sanity and his very life are threatened.