In 1976, paranormal investigators Ed and Lorraine Warren document the Amityville murders at the Amityville house, to determine if a demonic presence was truly responsible for Ronald DeFeo Jr. mass murdering his family on November 13, 1974 and the subsequent haunting incident involving the Lutz family. During a seance, Lorraine is drawn into a vision where she relives the murders and discovers a demonic nun figure, before seeing Ed being fatally impaled. While she is being strangled by the figure, Lorraine is able to break out of the vision.