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The Best Episodes of Horizon Season 21

Every episode of Horizon Season 21 ranked from best to worst. Discover the Best Episodes of Horizon Season 21!

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Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.

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Episode Rankings

  1. #1 Fan Favorite
    Horizon Season 21 Episode 1 - The Intelligence Man
    0.0/10(0 votes)

    #1 - The Intelligence Man

    S21:E1

    Sir Cyril Burt died in 1971, the most eminent psychologist of his age. Within two years the most bitter and disturbing scientific controversy since Piltdown Man saw Burt accused of lifelong faking and manipulation of phoney data. How and why was Burt allowed to get away with this?

    Director:Unknown
    Writer:Unknown

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  2. Horizon Season 21 Episode 2 - Microworld!
    0.0/10(0 votes)

    #2 - Microworld!

    S21:E2

    Horizon looks at the research advances in physics and technology of microelectronics.

    Director:Unknown
    Writer:Unknown

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  3. Horizon Season 21 Episode 3 - A New Green Revolution?
    0.0/10(0 votes)

    #3 - A New Green Revolution?

    S21:E3

    This episode of Horizon looks at the role of scientists in agriculture throughout the Third World countries.

    Director:Unknown
    Writer:Unknown

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  4. Horizon Season 21 Episode 4 - Spies in the Wires
    0.0/10(0 votes)

    #4 - Spies in the Wires

    S21:E4

    Horizon examines the various ways of committing computer fraud and at the efforts to prevent it and preserve our privacy.

    Director:Unknown
    Writer:Unknown

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  5. Horizon Season 21 Episode 5 - Valley of the Inca
    0.0/10(0 votes)

    #5 - Valley of the Inca

    S21:E5

    In this documentary, Horizon examines the work at an archaeological project in the Cusichaca Valley, Peru.

    Director:Unknown
    Writer:Unknown

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  6. Horizon Season 21 Episode 6 - The Conquest of Parasites
    0.0/10(0 votes)

    #6 - The Conquest of Parasites

    S21:E6

    Horizon presents this report on parasites, their life styles, and the diseases they cause in Third World countries.

    Director:Unknown
    Writer:Unknown

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  7. Horizon Season 21 Episode 7 - Reflections on a River
    0.0/10(0 votes)

    #7 - Reflections on a River

    S21:E7

    Horizon investigates the life for various civilizations along the river Waveney in east Angola.

    Director:Unknown
    Writer:Unknown

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  8. Horizon Season 21 Episode 8 - A Normal Face
    0.0/10(0 votes)

    #8 - A Normal Face

    S21:E8

    Horizon presents a report on current research and trends in facial reconstructive surgery.

    Director:Unknown
    Writer:Unknown

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  9. Horizon Season 21 Episode 9 - Prisoners of Incest
    0.0/10(0 votes)

    #9 - Prisoners of Incest

    S21:E9

    In this documentary, Horizon reconstructs a therapy session where a man imprisoned for incest meets his family for first time in two and one half years.

    Director:Unknown
    Writer:Unknown

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  10. Horizon Season 21 Episode 10 - Signs of the Apes, Songs of the Whales
    0.0/10(0 votes)

    #10 - Signs of the Apes, Songs of the Whales

    S21:E10

    Horizon investigates the linguistic potential of non-human species.

    Director:Unknown
    Writer:Unknown

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  11. Horizon Season 21 Episode 11 - Professor Bonner and the Slime Moulds
    0.0/10(0 votes)

    #11 - Professor Bonner and the Slime Moulds

    S21:E11

    In the documentary, Horizon reports on the life of slime moulds and how they provides clues to cell differentiation.

    Director:Unknown
    Writer:Unknown

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  12. Horizon Season 21 Episode 12 - The Mind of a Murderer: The Case of the Hillside Strangler
    0.0/10(0 votes)

    #12 - The Mind of a Murderer: The Case of the Hillside Strangler

    S21:E12

    Horizon presents the first of a two-part documentary about Kenneth Bianchi, the Los Angeles Hillside Strangler, who was convicted of the murder of 12 women even though his defence was that he had no memory of the crimes.

    Director:Unknown
    Writer:Unknown

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  13. Horizon Season 21 Episode 13 - The Mind of a Murderer: The Mask of Madness
    0.0/10(0 votes)

    #13 - The Mind of a Murderer: The Mask of Madness

    S21:E13

    Horizon presents the second part of a two-part documentary about Kenneth Bianchi, the Los Angeles Hillside Strangler, who was convicted of the murder of 12 women even though his defence was that he had no memory of the crimes.

    Director:Unknown
    Writer:Unknown

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  14. Horizon Season 21 Episode 14 - A Cruel Inheritance
    0.0/10(0 votes)

    #14 - A Cruel Inheritance

    S21:E14