A new street drug that sends its users across time and dimensions has one drawback: some people return no longer human. Can two college drop-outs save humanity from this silent, otherworldly invasion?

A young couple travels to a deserted town to try and find their mysterious uncle, only to discover that ghosts are real and very dangerous.

Three sisters and a group of their friends take a trip to the home of the recently deceased grandfather -- who died a particularly grisly death -- to learn more about the promise of an inheritance, only to encounter a family of ps...