Hypnosis(1999)

Hypnosis is a Japanese thriller that opens with three seemingly unrelated suicides in Tokyo on the same day: a young athlete, a groom at his wedding, and an elderly man at his wife's birthday party. A middle-aged detective investigating one case discovers a chilling pattern—each victim mentioned a "green monkey" before their death. Partnering with a young psychiatrist, he theorizes that hypnosis is the sinister link. As more bizarre deaths follow, the mystery deepens. The detective races to uncover the truth behind the killings and identify the next target before another life is claimed. The film builds tension through its exploration of psychological manipulation and the hunt for a killer operating through suggestion and fear.