HarperCollins is proud to present its incredible selection of beloved, essential classics.

"I despise the dull routine of existence. I long for intellectual exaltation. That is why I have chosen, or rather created, my own profession, for I am the only one in the world..."

In London in 1888, the razor-sharp detective skills of Sherlock Holmes are put to the test. Mary Morstan reports two seemingly unrelated and inexplicable events: the disappearance of her father, a British officer in the Indian Army, and the arrival of pearls by post from an unknown sender. Driven by the complexity of the cases, Holmes and Watson slowly begin to unravel a complicated web of exotic treasures, secret pacts, and mysterious deaths.

"The Sign of the Four" is one of only four novels featuring Sherlock Holmes and his loyal companion Watson, and will captivate those who are enthralled by Arthur Conan Doyle's short stories.