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Season guide

Horizon: 1966

23 episodes Premiered Jan 2, 1966 Updated Sep 25, 2026
Previously on Horizon

Season 3 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Directly follows the overarching narrative developments of Horizon Season 2.
  • ⚡ Faction dynamics and core character alliances shift under escalating external stakes.
  • ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • ⚡ Sets up serialized story arcs that build directly toward the climactic season finale.
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Season 3 Episodes

Episode Guide

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Season 3 Progress Shield

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Binge Efficiency Engine

Season 3: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

13%
87%
Mytharc (3): Crucial lore & season climaxes
Core (20): Character development & subplots
Side Quest (0): Standalone / filler
S3·E1 Mytharc

Windows of the Soul / Elixir of Youth

Jan 2, 1966 · 60 min

Horizon follows experiments on the eyes being undertaken at the Department of Psychology at the University of Chicago. The purpose of the experiments are to discover if our eyes ca

S3·E2 Core

The Troubled Mind / Triple-A. S.

Jan 16, 1966 · 60 min

Horizon explores an American mental hospital, observing schizophrenic patients under treatment with remarkable new drugs. The American equivalent of the British Association, the A

S3·E3 Core

A Man of Two Visions / The Scientist Applied

Jan 30, 1966 · 60 min

A profile of Dr. Albert Copley, the famous hematologist, who is also known as an accomplished artist under the name of Alcopley. For a country striving to raise its productivity,

S3·E5 Core

Route 128

Feb 27, 1966 · 60 min

North of Boston, on Route 128, a new industrial landscape based on science is developing. Here men of high intellectual qualifications are developing way-out products, including a

S3·E6 Core

The Beginning of Life / Science Friction

Mar 13, 1966 · 60 min

A remarkable Swedish film of the gradual development of the human embryo from fertilisation until birth. One man's impression of what science has done for the modern world: an ani

S3·E7 Core

So you want to be an Inventor? / The Severed Hand

Mar 27, 1966 · 60 min

Horizon looks into inventors who struggle against exploding technology, the buying power of great industries and taxation problems to make their leaps into the unknown. An account

S3·E8 Core

Chance and Decay / Meteorite Mystery

Apr 10, 1966 · 60 min

Europe's heritage of pictures, statues, and buildings is being destroyed at a frightening rate by atmospheric pollution, but an American scientist has just invented a method of pre

S3·E9 Core

Towers of Ilium / The Exploding City

Apr 24, 1966 · 60 min

The location of the historic city of Troy was finally pinned down by the researches of Carl Blegen. By A.D. 2,000, more than half the world's population may be living in cities. T

S3·E10 Core

Man in Space

May 8, 1966 · 40 min

Horizon travels to the spacecraft center in Houston, Texas to study astronauts in space and how they react to being in space and the stresses of launching and re-entry.

S3·E11 Core

Destination Mars / Editors in Conference"

May 22, 1966 · 60 min

Horizon looks at the possibilities of landing a man on the planet Mars. The Editors of two leading scientific magazines, Dennis Flanagan of the Scientific American, and Nigel Cald

S3·E12 Core

Man meets Duck / The Picture Machines

Jun 5, 1966 · 60 min

Gordon Taylor meets with Konrad Lorenz, the inventor of ethology, and interviews him about his work on animal instinct and his theories about human instinct. The world knows all a

S3·E13 Core

Where must the Money Go? / Phantoms Incorporated

Jun 19, 1966 · 60 min

Horizon explores substitute 'phantoms' which are used in radiation studies, manned spaceflight experiments and accident research that gives valuable information on the limits of to

S3·E14 Core

Genes in Action / Scientists and War

Jul 3, 1966 · 60 min

Dr. John Gurdon talks about the action of the chromosomes puffing when they undergo intense genetic activity. Sir Solly Zuckerman talks about his new book Scientists and War which

S3·E15 Core

The Lonely Children

Jul 17, 1966 · 60 min

Horizon investigates the research conducted in England and America on the problems associated with autistic children.

S3·E16 Core

Man of Science / 'Nature' Tomorrow

Jul 31, 1966 · 60 min

This episode of Horizon reports on the famous science fiction writer, H. G. Wells. An interview with John Maddox, the new editor of one of the world's most influential scientific

S3·E17 Core

M.I.T.'s ABC / The Disturbed Child

Sep 25, 1966 · 60 min

Horizon reports on the the Massachusetts Institute of Technology. Many parents know that their child has a problem but do not have the necessary insight to deal with it. A psychia

S3·E18 Core

Ten Years in the Antarctic

Oct 10, 1966 · 60 min

Horizon looks at the scientific research being carried out in the Antarctic under the guidance the Scientific Committee for Antarctic Research (SCAR) which was formed in 1856.

S3·E19 Core

The Athlete

Oct 24, 1966 · 60 min

Horizon investigates the stresses on athletes.

S3·E20 Core

From Peenemunde to the Moon

Nov 7, 1966 · 60 min

Christopher Chataway presents a program on the development of the rocket, first as a weapon, and then for the American space program.

S3·E21 Core

Sex-Change?

Nov 21, 1966 · 60 min

Doctors and psychologists talk about the problems inherent in the determination of sex.

S3·E22 Mytharc

The Structure of Life

Dec 5, 1966 · 60 min

This program shows the work of Ernst Chain, one of the discoverers of antibiotics, now a Professor of Biochemistry at the Imperial College in London.

S3·E23 Mytharc

The Wages of Science

Dec 19, 1966 · 60 min

The survival of Britain as an industrial power depends of science and on scientists. But are our scientists paid enough to attract them into the right jobs?

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