Oren Peli’s nightmare-inducing franchise is back for a fourth go-around! Following the mysterious events surrounding the disappearance of sisters Katie and Kristi and their families, a new family begins to experience unexplainable and terrifying occurrences in their seemingly picturesque suburban home. What do the sisters — and Kristi’s son — have to do with it? It all comes down to this! ‘Paranormal Activity 4′ haunts theatres on October 19. Courtesy of Paramount Pictures.