The Island of the Lost (German: Die Insel der Verschollenen) is a 1921 German silent science fiction film directed by Urban Gad and starring Alf Blütecher, Hanni Weisse and Erich Kaiser-Titz.
It was a common practice in the silent era for European filmmakers to produce unauthorized versions of famous works of literature, as evidenced by F. W. Murnau's Der Januskopf (1920) (based upon Robert Louis Stevenson's Dr. Jekyll and Mr. Hyde) and Nosferatu (1922) (based upon Bram Stoker's Dracula).
[1] Thought at one time to have been lost, a print turned up at the Bundesarchiv in Berlin, Germany.
Comments from the attendees included the fact that the film was somewhat illogical, and had more emphasis on comedy and romance than horror, but that it offered "memorable glimpses of human-animal hybrids".
[1] Dr. Marston leads a small party to a deserted island in the South Seas where they discover a hidden research facility run by a Professor McClelland.