Download or read book The Strange Case of Dr. Jekyll and Mr. Hyde, and Other Stories written by Robert Louis Stevenson and published by Penguin Classics. This book was released on 1979 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr. Jekyll invented a drug that would change him into the ominous Mr. Hyde. His evil nature, however, became the stronger part of him and to his horror, he no longer needed the formula to transform his appearance.