'Paranormal Activity 4' Trailer Will Make You Gasp [VIDEO]

Brian Anthony Hernandez
'Paranormal Activity 4' Trailer Will Make You Gasp [VIDEO]
Paranormal Activity 4 Early Screening Opportunity 640

Paranormal Activity 4 Official Trailer

Click here to view this gallery.

[More from Mashable: Nerds on Film: 10 Techie Character Types We Love]

After releasing three short trailer teasers for Paranormal Activity 4 this week, Paramount Pictures let loose the horror movie's first full trailer Wednesday. And trust me, it's scary -- creepy kid included.

The Paranormal Activity film series tells the story of a family's encounters with a demon through the lenses of handheld cameras and security cameras.

[More from Mashable: 15 Vintage MTV Promo Spots You’ll Cherish for Eternity]

Based on the new trailer, the latest installment appears to throw video chat footage into the mix.

The films, which have grossed $576 million at the box office, have routinely leveraged social media as a marketing vehicle. In 2009, Paramount used web service Eventful to challenge people to spark enough buzz for a nationwide release of the first Paranormal Activity.

Last year for Paranormal Activity 3, Paramount set up a viral site -- Darren's Timeless Memories -- that showcased home video-style clips of a family. The site eventually lead users to a teaser trailer.

For Paranormal Activity 4, Paramount is promoting the flick through social media with a "Want It" Facebook app, which connects to your profile to cast a vote for the city you live in.

Twenty-five cities with the most votes win early screenings of the movie. People in 2,040 cities have cast votes.

Paranormal Activity 4 is scheduled to premiere Oct. 19. The official trailer is available at ParanormalMovie.com.

This story originally published on Mashable here.