This note does not contain major spoilers for the book.

Not a Nero Wolfe book. In fact it takes place out in Cody, Wyoming, and has no overlap in characters with the Nero Wolfe universe (unlike Death of a Dude (#2) which has Archie and even Nero out at Lily Rowan's ranch).

Except for a few bits of city complexity carrying over to the "Wild West" (a police sergeant in Cody Wyoming?) that clunk a little, it feels to me less forced and less inauthentic than Death of a Dude.

The plot has twists and turns, and depends on history among the characters, and isn't based around a genius who doesn't tell us what he's thinking, so it's a very different experience. It doesn't offer Archie's voice or the Wolfe-Archie dynamic, of course.