Lanyon describes a letter he received from Dr. Jekyll. He is instructed to go to Jekyll’s study, to break the locks, and to
secure a particular drawer and its contents. A man will come to his consulting room at midnight. Lanyon carries out all
the details of the letter and admits a small and muscular man who creates a sensation of “disgusted curiosity.” Immediately
the man begins to prepare a compound from the contents of the drawer. When it is ready, the man asks Lanyon if he
wishes to let him go or to learn what will happen when he drinks the compound. Lanyon declares that he has gone too
far not to see what will happen. Thereupon the man drinks the potion and begins to change and assume the form of
Henry Jekyll. From that moment Lanyon feels his reason shaken and a deadly terror invades his thoughts.
He knows he will not recover from this shock. He has seen the creature change from Hyde to Jekyll.