Enola Holmes is the much younger sister of her more famous brothers, Sherlock and Mycroft. But she has all the wits, skills, and sleuthing inclinations of them both. At fifteen, she's an independent young woman--after all, her name spelled backwards reads 'alone'--and living on her own in London. When a young professional woman, Miss Letitia Glover, shows up on Sherlock's doorstep, desperate to learn more about the fate of her twin sister, it is Enola...

James Mycroft has just left for London to investigate a car accident similar to the one that killed his parents without saying good-bye to his partner in crime, Rachel Watts. Rachel is furious and worried about his strange behavior-- not that Mycroft's ever exactly normal, but London is the scene of so many nightmares. Unable to resist, Rachel jumps on a plane to follow him and lands straight in a whole storm of trouble. The theft of a copy of Shakespeare's...

With the demise of Moriarty, Sherlock finds himself locked in another mind battle with the powerful Charles Augustus Magnussen, who is holding the secrets of the world at his fingertips.