It is when Mr Utterson, a dry London lawyer, perused the last will of his old friend Henry Jekyll that his suspicions are aroused. What is the relationship between upright, respectable Dr Jekyll and the evil Edward Hyde? Who murdered the distinguished MP, Sir Danvers? So begins Stevenson’s spine-tingling horror story, the story of Dr Jekyll’s infernal alter ego, and of a hurt throughout the nocturnal streets of London that culminates in some dreadful revelation.