Is the haunting of Molly Hartley based on a true story?

The horror film "The Haunting of Molly Hartley" (2008) is not based on a true story. It's a fictional story created for entertainment purposes.

While the film features elements common to horror narratives like demonic possession, curses, and supernatural occurrences, it's a work of imagination. The filmmakers have not stated that the story is based on any real-life events.