When residents of a small-town begin attacking each other, the survivors are lead away from the area, but when they learn of others still trapped in the town they head back to rescue them before they fall victim to the bloodthirsty creatures.

This was a hard one to get a handle on as there's stuff to love and dislike here. Some of the stuff works, from the build-up in the beginning with the family being stalked in the house before it being set on fire to the gory ambush in the morgue, there's some nice action scenes early on that create a pretty creepy air especially when combined with the investigation angle. The assault on the camp as well as the action in the burned-out ruins of the town are rather nice and certainly big, fun action scenes that provide some nice blood and gore, and it gets a lot of fun out of an abbreviated ambush in a car-wash and a truck- stop encounter, but the fact remains that there's a lot of problems here. The biggest flaw is that the middle segments, after a strong opening, just drain the energy from the film as it continually repeats the tender family relationship that never once feels threatened or in danger, despite attempts to force the issue but it knowingly won't and just renders the whole thing pointless. Also, by dropping the number of encounters down it leaves the relentless pacing of the first half incredibly slowed down and dull afterward, drawing out the film a little too long in this section. Another big serious flaw is the complete and total lack of explanations for the toxin dropped in the town, which is a real mystery on all fronts in how it works, its' purpose and wherever the toxin came from. This is a major flaw which really hampers the film along with its other flaws as otherwise, this is a decent effort.

Rated R: Graphic Violence, Graphic Language and children-in-jeopardy.