Udgivet: Nov 15, 1965
Kørsel: 58 minutter
Genre: TV film
Stjerner: Clive Endersby, John Meillon, Bill Nagy, David Knight, Burt Kwouk, Roger Croucher
Crew: Naomi Capon (Director), Isaac Asimov (Story), Meade Roberts (Adaptation), Irene Shubik (Producer), George Spenton-Foster (Associate Producer)