This is based on the same family and paranormal case that is used as the setting for the popular feature film The Conjuring 2 (2016). It is one of the most heavily documented cases of this type.
Garnered 1,871,000 viewers, upon its initial airing on Sky Living, becoming the channel's most watched program in history, beating out previous record holder Gina Zanetakos (No. 152) (2013) by nearly 700,000 viewers.