The Possession of David O'Reilly A supernatural shockumentary about a demonic presence in a young couple's home in London. Details Casts Title The Possession of David O'Reilly Release Date 2010-05-10 Runtime 01 Hours 27 Minutes Genres Horror Thriller Production Companies Authentic Films Production Countries United Kingdom Giles Alderson David O'Reilly Francesca Fowler Anna Zoe Richards Kate Nicholas Shaw Alex Paul McGuinness Monster