It would appear that no moment of Paranormal Activity’s Katie went undocumented, as Paranormal Activity 3 takes us back to her childhood and shows that things were screwed up for her long before the first film, with a poltergeist causing hell for her and her family when she was kid. Now a new trailer has arrived, which to be honest does make it seem the franchise may be teetering on the edge of ridiculousness, but it’ll probably make shed loads of cash anyway. Catfish’s Henry Joost and Ariel Schulman are directing this one, and it’ll be in cinemas on October 21st.