Packed with action, this reinterpretation of Sir Arthuyr Conan Doyle's “Sign of the Four” is satisfying and entertaining. The two authors do a good job of bringing to life post-WWI London, with its former Chinese soldiers living in London, English fad for Chinese art, the opium dens, and the attitudes of the English towards foreigners.
Setting the story in 1924, the main character is Lao She, a scholar working at the university teaching students his language. When he's asked by Bertrand Russell to help him break Di Rengh shi, or Judge Dee, out of prison, where he'd ended up when police arrested a number of young Chinese men agitating for better treatment.
Dee and Lao are soon pulled into an investigation when Mr. Ma, the proprietor of a shop selling Chinese art is dead, murdered with a curved sword blade. This leads the two around London, in pursuit of answers, which reach from the shop to the home of a noble, to a film studio creating offensive yellow peril films.
Dee is meant to be a Sherlock analogue, while Lao functions as his Watson, chronicling their exploits as they follow the trial of multiple bodies, all men involved in a financial scheme. Dee unmasks criminals, and eventually reveals who the murderer is, a person with ties to all these men and Dee himself from the war.
The authors show that though Lao may not have quite the analytical brain of Dee, he's not a slouch, and both are up for the physicality necessary to protect themselves and chase culprits. Dee also begins what will eventually become in this series to something very similar to the Baker Street Irregulars, by recruiting a pickpocket who goes by the name of Jimmy Fingers, who, I think, will function as the leader of Dee's informants.
And something I particularly appreciated in this story was the commentary on colonization, imperialism, and religion, and their corrosive effects, as well as the poor treatment the serving and later veteran Chinese soldiers employed by the British Army underwent.
A new entry in the series is forthcoming next year, and I'm looking forward to reading it.