Instruct: Classify a review into positive or negative sentiment.
Query: good movie until the twist

I totally agree with the last review. The plot of this movie is definitely taken from Dean Koontz's Intensity with the exception of the unbelievably stupid twist ending.If they would have stuck with the original ending then this movie would have been decent but the ending just makes no sense at all and just kills the whole movie.They made a movie from Koontz's original story that stars John C. McGinley (Dr. Cox on Scrubs) as the killer so if you want to see a good version of this story with a believable ending then watch it instead of this crap.