Creator Thumbprint: Of the more subtle ones on display here are the upside-down house (which continues Connelly's fascination with oddly-constructed residences in the hills around L.A., e.g.: Bosch's cantilever, the Concrete King's all-concrete house from The Burning Room, etc.) and Ballard's final words to the dying Trent, continuing Connelly's tradition of using a Precision F-Strike when the bad guy gets killed that goes all the way back to The Black Echo.
Another glaring one late in the story is another appearance of the Mark Twain Hotel.
