Paranormal Activity 4 Full Length Official HD Trailer. Creepy isn't it ? Watch Trailer # 2 here : http://youtu.be/DU4FAjgoyZI In 2006, they disappeared. In October, all the Activity has led to this ! Since the new neighbors moved in, the motion sensors are turning on and off every night ! What the Hell ? Suscribe now to get the best movie trailers, while waiting for Paranormal Activity 4 new trailer and release date, on October 2012 !