After the disappointing Dead Silence, director James Wan and writer Leigh Whannell team up with the Paranormal Activity producers to deliver one of the more creative and genuinely creepy theatrical releases in years. Having said that, the film unfortunately loses a lot of its atmosphere and creepiness towards the end thanks to the fact that it shows the audience entirely too much, losing its simplicity and resulting in a mish-mash of several scares and ideas thrown together with little effect.

The story revolves around a young family that move into a new home, where one of the sons mysteriously falls into a coma and strange, seemingly paranormal incidents occur following the boy's comatose state. Thinking the house may be haunted, the wife attempts to confide in her husband, who naturally shrugs it off. That is, until one night where the wife is attacked by a malevolent spirit, which also triggers a series of other events that convinces the family to finally GTFO.