"Dr. Jekyll and Mr. Hyde" is a short horror film, based on the story of Robert Louis Stevenson, featuring Florence La Badie, a star of Silent Hall of Fame. 

The white-haired Dr. Jekyll is curious to experiment with a drug that can separate man into two beings - one representing good and the other evil.  He drinks the concoction and converts into a black-haired beast of a man with talons and fangs. He is immediately horrified, takes the antidote and becomes his normal self again.