based on true stories about Nance and Ed Warren;
Edward Warren Miney (September 7, 1926 – August 23, 2006)[3] and Lorraine Rita Warren (née Moran; January 31, 1927 – April 19, 2019)[4] were American paranormal investigators and authors associated with prominent cases of alleged hauntings. Edward was a self-taught and self-professed demonologist, author, and lecturer. Lorraine professed to be clairvoyant and a light trance medium who worked closely with her husband.
In 1952, the Warrens founded the New England Society for Psychic Research (NESPR), the oldest ghost hunting group in New England.[5] They authored many books about the paranormal and about their private investigations into various reports of paranormal activity. They claimed to have investigated well over 10,000 cases during their career.[6] The Warrens were among the first investigators in the Amityville haunting. According to the Warrens, the official website of the NESPR, Viviglam Magazine and several other sources, the NESPR uses a variety of individuals, including medical doctors, researchers, police officers, nurses, college students, and members of the clergy in its investigations.[7][8][9]