Out of the Unknown Main title caption for Out of the Unknown . Out of the Unknown was a British television science fiction anthology drama series , produced by the BBC and broadcast on BBC2 in four series between 1965 and 1971 . Each episode was an independent dramatisation of a separate science fiction short story . Some were written directly for the series , but most were adaptations of already published stories . The first three years were exclusively science-fiction based , but that genre was abandoned in the final year in favour of horror/fantasy stories . A number of episodes were junked during the early 1970s , as was standard procedure at the time before the video boom . A large number of episodes are still missing but some do turn up from time to time ; for instance , Level Seven from series two , originally broadcast on October 27 , 1966 was returned to the BBC from the archives of a European broadcaster in January 2006 . External links Out of the Unknown British Film Institute Screen Online BBC Treasure Hunt   This BBC Television -related article is a stub . You can help Wikipedia by expanding it . Categories : BBC television dramas | Fantasy television series | Science fiction television series | Anthology television series | Lost BBC episodes | BBC Television stubs 