I really think that's what they're gearing for reg. series with all the ambiguity at the end. There was no real final answers but for Joe Miller finding his daughter.
One thing I really loved about this was the fact that the hero of the movie and the bad guy were both after the same thing... to bring back their children. Each one did some extreme stuff and it makes you wonder what you'd do in the same place.
Another thing I liked was the levels of insanity/obsession the objects brought out in each person that possessed them.