Robert Louis Stevenson 
The Strange Case of Dr. Jekyll and Mr. Hyde (Diversion Classics) [EPUB ebook] 

Featuring an appendix of discussion questions, the Diversion Classics edition is ideal for use in book groups and classrooms.
When the monstrous Mr. Hyde begins a campaign of crime and terror, the lawyer Mr. Utterson is compelled to investigate. He finds a hideously disfigured villain bent on achieving his own ends, a man with a puzzling link to the otherwise respectable Dr. Jekyll. THE STRANGE CASE OF DR. JEKYLL AND MR. HYDE is at once a monster novel, a work of Gothic horror, and a fascinating look at human psychology.