Need a catch up on the Paranormal Activity story so far?

Need a catch-up on the Paranormal Activity story so far? Well Paramount Pictures has got you covered.

If you don't know your Kristi from your Katie, or your Hunter from your Toby, then just spend two minutes watching the video below and you'll be all set for the release of 'Paranormal Activity: The Ghost Dimension' on Friday! Don't go having nightmares...

 

What's happened in the world of Paranormal Activity? Before you enter the Ghost Dimension, take two minutes to catch up on what's happened in the previous films.