In nine short stories and one brand-new, never-before-heard Sherlock Holmes mystery, Laurie R. King blends her long-running brand of crime fiction with historical treats and narrative sleight of hand, starting with England's declaration of war in 1914.

As told in Mary Russell's teenage diaries, the whip-smart girl investigates familial mysteries, tracks German spies through San Francisco and generally delights with her extraordinary mind - until an unimaginable tragedy strikes.