Spiral is the sequel to the TV drama The Ring: The Final Chapter, based on the novel Spiral by Koji Suzuki. In a potent brew that is frightening audiences, this new type of horror blends traditional Japanese occult-like myths and curses with present-day elements such as viruses, genetic engineering and cloning.

Six people die in an office building where a murder once took place. When the authorities investigate the scene of the odd incident, they find the fingerprints of a man who had already been executed.

Ring: The Final Chapter is a television series, produced in Japan, based on the Ring movie series. There are a total of 12 episodes in the series and a sequel was made called Rasen, consisting of 13 episodes.