The Conjuring’ IS based on a ‘true story’…our story. However, the film is not based on my trilogy ‘House of Darkness House of Light’. It is, instead, based upon the case files of Ed & Lorraine Warren. … There are liberties taken and a few discrepancies but overall, it is what it claims to be — based on a true story, believe it or not. -Andrea Perron (in a Letter to Horror-Movies.ca, June 2013)