

Documentary
The Best Episodes of Horizon Season 12
Every episode of Horizon Season 12 ranked from best to worst. Discover the Best Episodes of Horizon Season 12!

Documentary
The Best Episodes of Horizon Season 12
Every episode of Horizon Season 12 ranked from best to worst. Discover the Best Episodes of Horizon Season 12!
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Seasons60
Season 12 Ratings Summary
"The Killer Dust" is the best rated episode of "Horizon" season 12. It scored /10 based on 0 votes. Directed by Unknown and written by Unknown, it aired on 1/20/1975. This episode is rated 0.0 points higher than the second-best, "A Time to Be Born".