Box Office: 'Paranormal Activity 2' Trounces 'Hereafter' - TIME
Horror Movies Face Scary Box-Office Numbers
Paranormal Activity (film series) - Wikipedia
Paranormal Activity: The Ghost Dimension (2015) - IMDb
Weekend Report: 'Paranormal Activity 2' Spikes to Horror High - Box Office Mojo
It breaks Exorcist's record to become highest grossing horror film of all time. Here are the rest | Hollywood - Hindustan Times
Box-Office Bloodbath: 'Paranormal' Slays 'Saw VI' - TIME
The current global total for Disney and Pixar's Elemental has come in and it is at $484.2M worldwide and half a million away from passing Puss In Boots: The Last Wish worldwide,
Forecast: 'Paranormal' Set to Deliver More Scares - Box Office Mojo