Good movie with a ludicrous ending...(spoilers)
I thought this was a pretty engaging flick right up to the very ending where they had the "evil government" or "evil corporation" or combination thereof step up and be responsible for what happened to the town.
And the idea that the evil government/corporation would be willing and able to spray a town with cyanide and murder 900 people is so crazy that it's right up there with people who think "9/11 WAS AN INSIDE JOB!!!"
I can only think that this movie was made during a time when the country still was recovering from Vietnam and Watergate and people believed the government/corporations were capable of anything.
A lot better ending would have perhaps shown them just not knowing what had happened in the town but having a few ideas.
Also, the movie never made it clear whether Tilly's character succumbed to the toxin (evidenced by her running down the guy who had just killed her boyfriend) or not.