PrimeWire

You can now watch the entire Horizon Season 18 Episode 12 movie online in high-definition quality, complete with English subtitles for a better viewing experience. Best of all, there’s no need to download anything—simply stream it directly from your device anytime, anywhere.

Horizon: In this episode, Horizon explores the new evolutionary theory that there are sudden, vs. gradual, evolutionary changes from one species to another.