In a fog-wreathed London, the respected Dr Jekyll's experiments on the dual nature of man unleash a brute that feels no moral restraint or remorse. Although excited by this freedom, Jekyll discovers that he is unable to control the power of his vicious alter ego and is faced with shameful discovery or ignominious death. Haunting and thrilling, this atmospheric fable is one of the world's greatest short stories. It is twinned here with Markheim, an earlier tale of second selves, conscience and the struggle between good and evil.