Plot hole: At the end of this movie, (1988) Kristi and Katie's mother died. In the first Paranormal Activity (2006), when the psychic is visiting he says it feeds off negative energy, and Micha says "I guess we can't have your mother over anymore."
Paranormal Activity 3 (2011)
1 plot hole
Directed by: Ariel Schulman, Henry Joost
Starring: Christopher Nicholas Smith, Chloe Csengery, Jessica Tyler Brown, Lauren Bittner
Other mistake: While Dennis is editing one of the video tapes, there's one on a table labeled "89" even though the film takes place in 1988.
More trivia for Paranormal Activity 3