Sign of the Four, Paperback

When Miss Mary Morstan calls on 221B Baker Street, the "utterly inexplicable" story she tells stirs the heart of Dr. John Watson - and rouses his friend Sherlock Holmes from his self-induced lethargy. For who else but London's only unofficial consulting detective could possibly solve the mystery of the disappearing army officer, the one-legged man, his barefoot accomplice, the missing treasure-chest and ... the "sign of the four"?