It Follows is the most refreshingly terrifying horror movie I've seen in the last year.
The movie begins on an exceptionally terrifying note, opening with a teenage girl fleeing from her house. She's running from someone - or something - but what? We have no earthly idea, but her fear infects us with an overwhelming and inexplicable terror. This opening scene sets the bar high for the rest of the movie, and we know that we will receive no mercy.
Director David Robert Mitchell knows what he's doing here. He knows what scares you, and executes it perfectly. With camera-work that can only be described as "surreal", we feel as if we are in a 100 minute long nightmare. The worst nightmares are the ones you know you can't escape from - you can't move fast enough, no matter how hard you try. At the heart of the horror film lies this simple, terrible truth: You cannot escape death.
In this nightmare, an inexplicable terror is following the protagonist. It's not a matter of WHAT is following her - per se - but rather WHEN it arrives. The inevitability of its coming is by far the most terrifying aspect of this movie.
These are actors you've never seen before, yet characters you know personally. The music score is one you've never heard before, but one you will never forget. This movie is a nightmare that you can't wake up from, and it is scary as Hell. You might as well be tied to your seat, forced to watch as an unstoppable, grotesque, demon-like entity walks slowly toward you...closer...closer...and closer.
This is how horror movies should be made. Fear should "follow" you, not "surprise" you. It Follows is easily one of the most terrifying horror movies of the decade. I recommend it 100%.