It was so scary I could barely watch it! They did a great job. Yes none of the previews from tv are in it, but that means you have no idea what's going to happen and makes it all the more scarier. I think that was the point, to mislead you! Not because they are "dumb" as others have said.. I'm sure they knew what they were doing...The ending is left open which is crappy but if there is a 4 I will see it too!