Sara Paretsky

Devotees of Sherlock Holmes are a famously obsessive bunch, and in the 126 years since Arthur Conan Doyle introduced his coolheaded detective they have certainly had plenty of real-world intrigues to ponder alongside fictional ones like “The Adventure of the Blue Carbuncle.”

There have been fierce battles over control of Conan Doyle’s estate and the preservation of his former home in Surrey, England — to say nothing of the wild speculations surrounding the mysterious 2004 death of a prominent Holmes scholar who was found garroted with a shoelace shortly before a controversial auction of Conan Doyle papers.