This film had an engaging premise. A murderer is shooting pellets laced with a mite-bearing, extremely hallucinogenic mold into air conditioners of intended victims. The victims then destroy themselves in a manner orchestrated by their killer.
Now here is the disappointing part... The film could not decided if it was going to remain a mystery or a supernatural thriller. Unfortunately, by the time the credits rolled, I really didn't care.
There are several different sub-plots traveling straight together in the first half of the film. Tony Leung Ka Fai plays a cop failing to cope with the attempted murder of his daughter and the suicide of a corrupt fellow officer he helped bring to justice. His daughter won't speak and his neglected wife is seeking a divorce. Amid the murders, Leung Ka Fai learns that a FBI agent specializing in behavioral science and assigned to work with him, has been summoned by his superiors for show. One of his fellow detectives alludes to this and that the government might have a malevolent purpose behind this. The investigation points towards supernatural forces, and we are led into a temple where we witness a murder take place in the midst of what appears to be a Taiwanese Satanic ceremony.
All this flies straight together, but then each veers off in a separate direction, and in order to make sense and keep up with the story line, the viewer needs "double vision."
