As part of The Conjuring Universe, The Nun includes true-story connections that make the movie more disturbing. Based on the experience of real-life demonologists Ed and Lorraine Warren, The Conjuring Universe tells stories purported as real-life horrors with a supernatural connection. Actors Patrick Wilson and Vera Farmiga have made the Warrens household names, but previous films have made tenuous connections between fact, fiction, and horror.