When did Horizon Season 13 Episode 29 air?
Horizon Season 13 Episode 29 aired on December 13, 1976.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Horizon looks at new developments in computer technology that have made mass surveillance possible, and also its political misuse.
Direct answers for episode-level questions and details.
Horizon Season 13 Episode 29 aired on December 13, 1976.
This episode runs for approximately 60 minutes.
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