Stevenson's classic "shilling shocker" has remained in the public imagination for well over a century, spawning numerous adaptations.

Now available in an accessible format for all readers. "Man is not truly one, but truly two." A terrible killer lurks in London's dark and foggy corners.

His crimes are witnessed, but no one can track him down.

At the same time, the respectable Dr Jekyll is on a quest of his own. But Dr Jekyll's discoveries look set to unleash an appalling truth.

Just how closely entwined is his identity with that of brutish Mr Hyde?