Based on the Robert Louis Stevenson story: Doctor Henry Jekyll’s enthusiasm for science and his selfless acts of service have made him a much-admired man. But as he visits Sir George Carew one evening, his host criticizes him for his reluctance to experience the more sensual side of life. Sir George goads Jekyll into visiting a music hall, where he watches the alluring dancer Gina. Jekyll becomes fascinated with the two contrasting sides of human nature, and he becomes obsessed with the idea of separating them. After extensive work in his laboratory, he devises a formula that does indeed allow him to alternate between two completely different personalities, his own and that of a brutish, lascivious person whom he names Hyde. It is not long before the personality of Hyde begins to dominate Jekyll’s affairs. –IMDb
John Stuart Robertson (14 June 1878 in London, Ontario – 5 November 1964 in California) was a Canadian born actor and later film director perhaps best known for his 1920 screen adaptation of Dr. Jekyll and Mr. Hyde, starring John Barrymore. He broke into filmmaking in 1915 with Vitagraph, then with Famous Players-Lasky, making 57 features in his career. Robertson left film in 1935, amid the increasing prevalence of sound pictures. The Byrds song “Old John Robertson” was about Robertson. —Wikipedia
It suffers from a Victorian theatricality and has neither the lasting impact of The Cabinet of Dr Caligari or the technical showmanship of Way Down East, both released the same year, but it is a must see for any fan of the silent genre. Most of that credit goes to Barrymore's bravura performance as the all too good Jekyll and the Id triumphant shambling Hyde.