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A Haunted House (2013) - IMDb
Paranormal Activity: The Marked Ones - Box Office Mojo
Paranormal Activity 2 Debuts at Top of Box Office - TV Guide
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Paranormal Activity 2 Is A Scary Success | Movies | Empire
Paranormal Activity 3 Wins US Box Office | Movies | Empire
Paranormal Activity: The Marked Ones" Scares Up The Lowest Debut For The Franchise
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Why Paranormal Activity was one of the most successful movies ever made, in one chart - Vox
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Your Box Office Explained: You Can't Call Paranormal Activity 4 Anything Other Than a Success
Paranormal Activity (2007) - IMDb
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2017: The Biggest Year in Horror History - The New York Times
Box Office Guru and Box Office Mojo - Blood Bath
Around-the-World Roundup: 'Paranormal Activity 2' Scares Up Solid Foreign Debut - Box Office Mojo
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Paranormal Activity - Box Office Mojo
