Synesthesia

A professional voyeur and an elusive serial killer both suffer from a sensory disorder that affects on in 100,000 people in director Toru Matsuura's hallucinatory thriller. Shin suffers from synesthesia, a rare sensory disorder in which one form of stimulus triggers a completely unrelated response. His constant mental state borders on insanity, and he makes his living by providing voyeuristic videos to a well-paying clientele. (rottentomatoes.com)