Twists together a couple of fun capers with a lot of Sherlockiana, and maybe a handful too many twists. The chapters get shorter and shorter—jumping between the 21st century and the turn of the 20th, between Sherlock’s fans and his creator—and sometimes an entire chapter is just an awkward exposition dump, and then back into the wormhole! Moore handled it more elegantly in The Holdout. The overview of Conan Doyle’s creative process and talent is delicious, however.