Katie and Kristi are back in peril in the first trailer for "Paranormal Activity 3" -- but this time around we're going way back in time.
Continuing the prequel trend set by "Paranormal Activity 2," the third entry goes back to 1988, when the two young girls first encounter the nasty demon who will follow them in the other films.
The third movie will be helmed by Henry Joost and Ariel Schulman -- who directed and appeared in the is-it-real-or-not movie "Catfish."
Check out the trailer and see how Bloody Mary fits into the equation.
"Paranormal Activity 3" opens October 21, 2011.
