The Strange Will (Hong Lei Chung #1), by Harry Stephen, Hazel Goodwin Keeler (epub/Kindle/pdf)
Farrel Ivins may be standing on the gallows with his neck in a noose, but he's not worried. He's taken a drug that makes it impossible to contemplate his future, and besides, he hasn't given his "final" speech yet. He knows that when the governor hears about the odd goings-on in Oxford Circus, Lake City, Chicago, and Chinatown Crescent, where the tong of the Lean Grey Rats rules, Farrel is bound to be saved.
So begins the most Oriental of Harry Stephen Keeler's webwork mysteries.