In July 2013, prior to The Conjuring release, Variety reported that New Line Cinema was already in the early stages of development of a sequel with Chad Hayes and Carey W. Hayes writing the script, following the positive test screenings and reviews of the first film. Final Destination 5 writer Eric Heisserer would later be brought in to doctor the Hayes' script, focusing mainly on dialogue. In January 2015, David Leslie Johnson was hired for rewrites. The film deals with the case of the Enfield poltergeist, which took place in the London Borough of Enfield from 1977 to 1979, and involved the alleged haunting of two sisters, aged 11 and 13, at their mother's council house. The Conjuring 2 also touches on the Warrens' most famous and most documented case, The Amityville Horror.
