Leslie S. Klinger is one of the world’s foremost authorities on Sherlock Holmes. He is the editor of the three-volume The New Annotated Sherlock Holmes. The first two volumes, The Complete Short Stories, won the Edgar for "Best Critical/Biographical" work. Klinger is a member of the Baker Street Irregulars and lives in Malibu, California.
Laurie R. King is the New York Times bestselling author of numerous books, including the Mary Russell and Sherlock Holmes stories. She has been nominated for a multitude of prizes, and her fiction has won the Edgar, Creasy, Nero, Macavity, and Lambda Awards. She has been guest of honor at several crime conventions and is probably the only writer to have both an Edgar Award and an honorary doctorate in theology. She was inducted into the Baker Street Irregulars in 2010.