The Tempest two other silent versions, one from 1911 by Edwin Thanhouser, are known to have existed, but have been lost. The plot was adapted for the Western "Yellow Sky", directed by William A. Wellman, in 1946. The 1956 science fiction film "Forbidden Planet" set the story on a planet in space, Altair IV, instead of an island. Professor Morbius and his daughter Altaira (Anne Francis) are the Prospero and Miranda figures (both Prospero and Morbius having harnessed the mighty forces that inhabit their new homes). Ariel is represented by the helpful Robby the Robot, while Sycorax is replaced with the powerful
Planet of Evil but name, the Id monster from the 1956 MGM feature film "Forbidden Planet"." Howe and Walker also praised the jungle set and the performances of Frederick Jaeger and Ewen Solon, but criticised Prentis Hancock's "poor" portrayal of Salamar. Ray Dexter's assessment of "Planet of Evil" also acknowledged the influence of the 1956 film "Forbidden Planet", which inspired the writers to include an invisible, murderous monster, as well as elements of "Jekyll and Hyde". Reviewing the serial in 1999, literary critic John Kenneth Muir drew attention to similarities between "Planet of Evil" and Ridley Scott's 1979 film, "Alien", in particular the