Dr. Jekyll and Mr. Hyde is a 1913 horror film based on Robert Louis Stevenson's 1886 gothic novella Strange Case of Dr. Jekyll and Mr. Hyde. Directed by Herbert Brenon for producer Carl Laemmle's company IMP (which he later changed to Universal Pictures), the production stars King Baggot in the dual role of Jekyll and Hyde. The film was re-released in the United States in August 1927.

Plot

Dr. Henry Jekyll (King Baggot) sends a note to his fiancée, Alice (Jane Gail), and her father (Matt B. Snyder) to say that instead of accompanying them to the opera, he must give more time to his charity patients. At Jekyll’s practice, his friends Dr. Lanyon (Howard Crampton) and Utterson (William Sorrel), a lawyer, ridicule him for what they consider his dangerous research. Alice and her father also visit Jekyll’s rooms, but although apologetic, the doctor insists on devoting his time to his patients. That night, however, Jekyll undertakes a dangerous experiment, swallowing a drug intended to releases his evil self. His body convulses, and he transforms into a hunched, twisted figure.