In 1963 a young woman was possessed by a demon claiming to be the Devil, a local priest was requested by the girl's mother to perform an Exorcism. No one knows what became of them. 50 years later a group of filmmakers attempt to recreate the Exorcism but they are not prepared for the horror they will encounter. Captured on behind the scenes camera we the audience are now able to see these disturbing and unexplained events leading to the film crew's final hour.

When Charlotte - a beautiful, broke student - is offered a job cat-sitting in a vast Georgian manor house over a long weekend, at £200 per night, she can't believe her luck, but her employers are far from being the harmless eccentrics that they appear to be.