In 1973, Jack and Janet Smurl move into a modest duplex in West Pittston, Pennsylvania, hoping for a fresh start. What follows is more than a decade of escalating disturbances: strange smells, disembodied voices, levitations, physical assaults, and eventually, a demonic entity said to stalk the family even outside their home. With no help from the Catholic Church, the Smurls turn to controversial paranormal investigators Ed and Lorraine Warren, who declare their house the site of one of the most terrifying hauntings they’ve ever encountered.