My quick rating - 5,3/10. What starts as your typical new house happens to have some unwanted visitor movie transforms by the end into a sci fi mess that the writers could not get out of. Of course the family is haunted at night by a spirit/ghost or whatever and so the single mother (Ali Larter) seeks the help of a friend who happens to be a scientist and quite interested in the supernatural. So far very typical and along with somewhat questionable effects (old school look but effective for some reason) we plodge through some cheap scares nd very subtle clues to what is really going on. I will pretty much just stop there and allow you to figure this is all just mediocre until someone decides to alter this whole idea and insert time travel. That is when the shift changes completely along with a ridiculous tie in to the scientist and a time paradox that would put all to shame. Still shaking my head on how they thought this would work. Check it out and maybe you have a theory since the writers sure didn't. If you aren't a fan of sci fi and just strange tie ins like this, you won't like this at all. I happen to like it for the same reason but this easily can get a 3 star rating from a non-fan, that I can see as well.