While Spiral is the sequel to Ring, it's so well developed, it could be a stand alone novel. It starts where Ring leaves off, with a new main character, Ando, finding out the man he's doing an autopsy on is aman he knew in college by the name of Ryuji. After the autopsy is finished, Ando sees the tiniest piece of newspaper sticking out of a stitch (they fill the empty body with newspaper after an autopsy), which he learns is a code from his old friend.
As the novel progresses, Ando finds himself trying to find out the secret behind the ring virus. He gets help from a friend and colleague, who's a great secondary character. And the twist at the end is awesome, I loved it. The way the twist is written, it's both creepy and scarily realistic. Great way to end the novel.
Suzuki intertwined the first book throughout this one so well, and the way he made the main character, Ando, know Ryuji from Ring was well written and thought out. Spiral had quite abit of science in it, but it was so simply explained, it was very easy to catch on to what he was saying (especially if you've taken a biology class).
Overall, while I really liked Ring, I loved Spiral. It was an easy read, it was fascinating, it flowed from the beginning to the end, the characters were well developed; it was just a great novel. The horror in the novel, isn't in your face, it's very subtle, which makes it even scarier.
My rating: 10/10