Well it's gonna ruin the movie for you but...Katie comes in the house and snaps Dan's neck from behind, kills Kristi by throwing her into a wall and takes Hunter from his crib and supposedly they disappear and are never found. :( Basically only Ali lives.
ohhhh yeah, I ment the part where the dad puts the sheet over her...okay, I just couldnt really tell cuz the camera's movin like crazy...
dont worry, I posted this question, saw the rest of the movie, then came back :)
The aunts husband the the mom and dad at the end