Thanks to movies likes "Paranormal Activity," ghost and haunted house movies are making a comeback. You could say what "Scream" did for slasher movies, "Paranormal Activity" does for haunted house movies, and within the stream of terrifying and top-notch haunted houses movies to emerge is "Greystone Park." Filmed in a sort of mockumentary style or pseudo-documentary form, the movie stars Sean Stone, son of Oliver Stone of "JFK." Sean meets Alex Wraith, an urban explorer at one of his father's dinner parties and hears about paranormal encounters Alex has had visiting abandoned mental hospitals, of which there are a lot on this country. Along for the trip is Antonella Lentini, a "hauntingly" attractive student from NYC University with a similar interest in insane asylums, and they travel out to explore the abandoned and derelict Greystone Park Mental Hospital in New Jersey for a short film. The best part of the movie is that the location is the real star of the movie. Pieced together from footage shot at Letchworth Village, Creedmore Asylum and Linda Vista Hospital, the setting floats between uneven states of neglect from being completely decimated and ruined to almost preserved as they wander the location looking for activity, getting scared by shadows, unnerved by props and settings or just scaring each other a long the way. Some of what they encounter are shadows set aside for just the audience to see to establish the notion that maybe the ghosts aren't real, and maybe someone else could be in the location trying to scare them. However, a few weak spots come up here and there. One, while the movie is both terrifying and psychological, the conversations of the trio border on the inane as they over-theorize and debate on why ghosts exist and why people are drawn to visiting these locations. Another problem with the movie are the intense blackouts and camera problems that occur throughout. After a while, they get kind of a little annoying. It is hard enough the travel through the setting with the characters without having to also experience their hallucinations and breakdowns with them, especially since the movie frequently goes pitch black and completely unlit at times. At one time or another, each of the main characters gets "possessed" and zones out without any memories of what they did while they were in character. The location alone even dressed up with the odd props and disturbing mutilated dolls is disturbing enough without having to endure the seven glimpses of images compressed down to under two seconds. Another problem I have is there are two many sub-plots with the discussions of Billy Lasher as one of the ghosts, the talks of someone else being in the location, whether or not Alex is trying to scare them, the worries of devil worshippers on the site, the struggles with being lost inside the structure (Alex always claims to know where he is, but he never does) and every other thought that gets passed around in the movie. Bottom line: it's an excellent movie with an intense location, but the "Twilight Zone" ending where it ends up doesn't measure up with the rest of the film or the journey it took getting there.