Skip to content

Horizon

BBC TwoDocumentary · 62 seasons

7.5TMDB

See what people think of Horizon

Rate it, keep track of what's next and see what friends think. Free.

Continue with Apple Continue with Google or use your email

Season 21

E1E1The Intelligence ManMon, Jan 9 · 60 min

E2E2Microworld!Mon, Jan 16 · 60 min

E3E3A New Green Revolution?Mon, Jan 23 · 60 min

E4E4Spies in the WiresMon, Jan 30 · 60 min

E5E5Valley of the IncaMon, Feb 13 · 60 min

E6E6The Conquest of ParasitesMon, Feb 27 · 60 min

E7E7Reflections on a RiverMon, Mar 5 · 60 min

E8E8A Normal FaceMon, Mar 12 · 60 min

E9E9Prisoners of IncestMon, Mar 19 · 60 min

E10E10Signs of the Apes, Songs of the WhalesMon, Mar 26 · 60 min

E11E11Professor Bonner and the Slime MouldsMon, Apr 9 · 60 min

E12E12The Mind of a Murderer: The Case of the Hillside StranglerMon, Apr 16 · 60 min

E13E13The Mind of a Murderer: The Mask of MadnessMon, Apr 23 · 60 min

E14E14A Cruel InheritanceMon, Apr 30 · 60 min

E15E15The Malvern LinkMon, May 7 · 60 min

E16E16Contented Cows and Other AnimalsMon, Nov 5 · 60 min

E17E17Picking WinnersMon, Nov 12 · 60 min

E18E18The Brain PuzzleMon, Nov 19 · 60 min

E19E19Global VillageMon, Nov 26 · 60 min

E20E20IvanMon, Dec 3 · 60 min

E21E21A Mathematical Mystery TourMon, Dec 10 · 60 min · ★ 7.0

E22E22SuperchargedMon, Dec 17 · 60 min

Questions

Where can I watch Horizon?

Horizon streams on PBS.

How many episodes are in Season 21?

Season 21 has 22 episodes.