When did Horizon Season 28 Episode 1 air?
Horizon Season 28 Episode 1 aired on January 7, 1991.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Documentary considering the nature of sudden death, the effects of coronary heart disease and the part they play.
Direct answers for episode-level questions and details.
Horizon Season 28 Episode 1 aired on January 7, 1991.
This episode runs for approximately 60 minutes.
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