This movie is imaginative and interesting. It has a fairly simple plot and a complicated execution. It's about a widower who learns that his uncle, who has recently passed away, has left him an inheritance of a very high-tech house set in the woods. The widower, his family and their nanny move into their new home which is filled with beautiful belongings and gadgets from around the world.They soon discover its not a house but a complex, fine tuned machine with latin phrases etched in walls of glass that , on a timer, move and shift, trapping the residents in rooms that each hold one of the thirteen ghosts that they see only with special glasses. The residents then try avoid them at all costs. It's a high-tech ghost story unlike most anything you've ever watched. If there are any weak spots in this movie ...you'll forget them soon after they present themselves. However there is a measure of violence, blood and gore so use discretion when watching it with others. It's one of those rare sleeper hits that needs to be part of your collection. I definitely recommend this movie !