Very satisfying end to a progressively crazy series. I mean, seriously, can we expect anything else when the world is about to end? Cults aside, Henry is right there with the rest of them, still a policeman even when hunting for a sledgehammer, his sister, or that one last kiss. 
 (But not with his sister, mind you. He isn't *that* crazy.) 
 Of course, any SF/Mystery series that brings in the Amish is going to be slightly *odd*, right? Still, hunting for his lost sister is far from being the craziest thing anyone could do when faced with their end. A little companionship, a little bit of happiness, a bit of relaxation before Maia destroys the world. 
 Oh, who am I kidding? It all goes to shit. 
 And the best part is that it's still a mystery steeped in true apocalyptic SF, even Walking Dead-ish ambiance, getting into the deeper paranoid fantasies, the tenacious clasping to ideas and ideals, and (and here's the very best part,) a very satisfying end to the book and to the series. 
 Henry has remained true to himself to the very end. 
 There's something rather divine about that, even when it's batfuck crazy. My hat goes off to you, Hank! May you enjoy companionship and crazy conspiracies in (view spoiler)[your next life (hide spoiler)].