In modern literature only a few stories are so haunting that their characters seem never to die. Robert Louis Stevenson's The Strange Case of Dr. Jekyll and Mr. Hyde is the equal of Dracula, Frankenstein, and the tales of Edgar Allen Poe and Franz Kafka. The frightening account of the urbane doctor who turns into a homicidal madman was an immediate success. It sold an unprecedented million copies before the turn of the twentieth century.To this day,...