Paranormal Activity 4 is a 2012 American found footage supernatural horror film, directed by Ariel Schulman and Henry Joost and written by Christopher B. Landon from a story by Chad Feehan. The film features Katie Featherston, who starred in the first film, and had cameos in the other two. The film revolves around Alex who experiences strange events after she meets her neighbour's son Robbie. Her life turns into a nightmare when one by one all her dear ones are murdered.