This is the second Koontz work I've read and I enjoyed it quite a bit more than the first. The novel includes a variety of richly-imagined characters and incorporates supernatural plot twists into the otherwise realistic plot. Although, I would classify this in the suspense thriller genre rather than as science fiction. I think the plot description on the back cover is quite misleading - the story seems to focus much more on the "relentless killer" than any of the other characters and events mentioned. The first two sentences of the description ("This is the story of a boy who loses his sight. And then mysteriously regains it.") describe events that do not actually begin to occur until page 415. As long as serial killers are of interest to you, then this will be an exciting read. Nothing too graphic or disturbing here however, and you will find many likable and inspirational characters to root for.