This is a found footage spoof of paranormal reality shows like "Ghost Hunters" and it works very well. The story centers around the "Grave Encounters" crew who investigate a deserted and supposedly haunted mental hospital.

What works so well here is the setup. Most of the crew, particularly hot shot host Lance Preston (Sean Rogerson), are painted as manipulators of their audience. They scoff their way through interviews with people familiar with the seriously demented history of the hospital. Lance even goes so far as to pay someone whose never seen anything odd occur at the hospital to make up a story on camera.

With that basic level of distrust and dislike established, the "Grave Encounters" team is locked overnight in the hospital. According to Lance, locking themselves inside brings and additional sense of danger to the show's realism.

As is to be expected, strange things, followed by bad things, followed by horrible things begin occurring. Hallways change and exit doors lead to more hallways and tunnels. The hospital is changing. It becomes a maze. Hours turn to days and the crew is slowly killed off by evil spirits and malevolent ghosts. But as the hauntings grow, we start to like the remaining crew members, even the despicable Lance Preston. And it's too bad that all of them are being driven insane as they are relentlessly pursued. It's weird but I was most affected by a moment when a clearly crazed and starving Lance kills and eats a rat.

The special effects are average at best but are used well and the normally cheap and overused jump scare is actually well utilized.