In some ways this is the most affective Paranormal Activity film of the bunch, with a number of good scares and clever use of special effects. There's chills aplenty and some great shorts shitting moments. I'm a bit puzzled by how it ends and how the filmmakers are going to explain the progression into the other movies, as it's a prequel to a prequel. But I guess that's what Paranormal Activity 4 is all about. Directors Henry Joost and Ariel Schulman -- who made Catfish -- do a great job of recreating the 80s and crafting some convincing horror. That said, if you hated the other Paranormal Activity movies, you'll hate this one. I didn't, so it gets a Good!