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Horizon

BBC TwoDocumentary · 62 seasons

7.5TMDB

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Season 12

Questions

Where can I watch Horizon?

Horizon streams on PBS.

How many episodes are in Season 12?

Season 12 has 26 episodes.

Episode roomHorizon S12 E18

Horizon · Season 12 · Episode 18

Strange Sleep

Monday, June 30 · 60 min

Horizon investigates the discovery of gaseous anaesthetic from 1840 until the early years of 20th century.

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