Disappointing, not because it was a poor concept, but because there was little to no resolution of the main thrust of the film. Great actors and marginal character development made for a muddled story. Absolutely had the potential to be a fantastic neo-scifi-horror genre, but failed to provide any plausible explanation of the malevolent behavior of the antagonist, its genesis, and why psychotic individuals were unaffected. Could possibly recover if they extended the film in a follow-up.