While it's being shelved under science fiction, and while it no doubt is science fiction, The Physiognomy feels more like fantasy for most of its length. Two thirds of the novel are spent outside the dystopian Well-Built City (which itself has an interesting mix of old and new technology), setting for only the last third of the book. We don't get in touch, for those two thirds, with the technological advance of the City, and that explains the fantasy feel.
The story is interesting, though The Physiognomy feels incomplete. That's because it's part of a trilogy (the next novels are Memoranda and The Beyond). Cley, the protagonist, is a physiognomist, which is a state function- the state being under the totalitarian rule of Drachton Below, a man with a severe god complex - that combines, in a fashion, the functions of investigator and judge. Remember Judge Dredd? Cley is almost like Dredd, only he doesn't execute people. People are executed by a gas that inflates their heads until they pop. Not by the physiognomists themselves. Those only point their fingers at certain people, and find out if they're guilty of a crime by the measurements of their bodies. They can also predict the future using the same science, the Physiognomy. The Physiognomy was created by Drachton Below so...you get the picture.
At the beginning of the story, Cley is a corrupt, morally disgusting individual. He is sent by Below to investigate a crime in the 'territory'. That's the starting point in a journey of, say, self and world discovery, and soon enough Cley is one terrific guy (suspension of disbelief necessary, for sure). The Physiognomy is well done and entertaining, and very worth the read. I would have appreciated more solid world building (things are sometimes just too vague), but the novel is fast paced and interesting, with very surreal imagery (if you're into that, the book's a treat). I'll read the next two.