This is just almost six hundred pages of unconvincing and frankly boring chase scene, smothered in Koontz' own tedious political soapboxing. Guns good! Woke bad! Rich people good! Everyone else ignorant and bad! Plus his main character is yet another dull perfect-father type and the kids are more of the unrealistic little cherubs he likes to write. Koontz has kids, I think, but to read his child characters you'd think he'd never met them. 

One thing that was really compelling was the idea that this antagonist has essentially limitless powers to heal himself, but Koontz has considered the toll that would take on a body - the massive energy expenditure - and created an unstoppable self-cannibalising nightmare that I found really interesting as a concept. I'd love to see Wolverine written this way.

Ultimately, more than any other Koontz I've read, this was a real chore to get through. I came pretty close to giving up - only a long train journey pulled me through this one.