Most of the necessary ingredients were there so this should have been a successful film. Billed as a Sci-Fi/Adventure, this 2009 New Zealand production though, is anything but successful. Fantastic special effects aside, the story feels incomplete, the pacing is odd, the sense of urgency slips from time to time with unnecessary distractions, the dialog was everything except informative, and the acting uniformly dull (Sam Neil in particular looked as if he wanted to be somewhere else doing anything but this movie.). The only element that worked was the spooky shape shifters living next door. If the rest of the movie had managed to capitalize on that instead of splintering off into a lackluster teen angst movie of the week this might have worked. Instead, with too many things that didn't make sense, this movie just drifted from one inexplicable scene to another: the `split' of the twins was arbitrary and forced, the sequence in the police station useless, why did the aunt and uncle keep disappearing? In addition, some of the reactions to danger were obscenely ludicrous (who, upon hearing their neighbors want to kill them, just go to bed. Or, while your front door is being broken down, just stand there and watch until the intruder is upon you!?). Crazy. What a waste.
I will add that I'm glad I watched it, but it's not a keeper.