First of a two-part special. Ten volunteers have come together for an extraordinary test. Five are 'normal' and the other five have been officially diagnosed as mentally ill. Horizon asks if you can tell who is who, and considers where the line between sanity and madness lies.
| Title | Horizon - Season 0 Episode 53 : How Mad Are You? (1) |
|---|---|
| Alternative Titles | BBC Horizon |
| Subtitle Available |
 ETC.
|
| First Air Date | 1964-02-04 |
| Last Air Date | 2025-10-06 |
| Number of Episodes | 1173 |
| Number of Seasons | 61 |
| Genres | Documentary, |
| Networks | BBC Two, |
| Casts | |
| Plot Keywords | , |
Episodes List
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Horizon Season 0 :Episode 1 Horizon Christmas Special: Hand me my Sword, Humphrey Horizon Christmas Special: Hand me my Sword, Humphrey
1966-12-25Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 2 The Case of the Ancient Astronauts The Case of the Ancient Astronauts
1977-11-25Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 3 The Mind's Eye The Mind's Eye
1980-01-28Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 4 25 Years in Space 25 Years in Space
1982-12-25Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 5 Biology at War: The Mystery of Yellow Rain Biology at War: The Mystery of Yellow Rain
1984-05-15Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 6 Beyond the Moon Beyond the Moon
1984-07-21Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 7 Biology at War: A Plague in the Wind Biology at War: A Plague in the Wind
1984-10-29Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 8 Twenty-First Birthday Twenty-First Birthday
1985-05-20Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 9 Halley's Comet - The Apparition Halley's Comet - The Apparition
1985-11-25Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 10 Halley's Comet - The Encounter Halley's Comet - The Encounter
1986-03-13Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 11 The Diary of Discovery The Diary of Discovery
1988-09-28Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 12 Making an Honest Fiver Making an Honest Fiver
1990-06-06Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 13 Red Star in Orbit: The Invisible Spaceman Red Star in Orbit: The Invisible Spaceman
1990-12-07Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 14 Red Star in Orbit: The Dark Side of the Moon Red Star in Orbit: The Dark Side of the Moon
1990-12-14Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 15 Red Star in Orbit: The Mission Red Star in Orbit: The Mission
1990-12-21Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 16 A Close Encouter of the Second Kind A Close Encouter of the Second Kind
1992-07-10Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 17 Hide and Seek in Iraq Hide and Seek in Iraq
1992-08-23Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 18 The Truth About Sex The Truth About Sex
1992-10-12Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 19 Assault on the Male Assault on the Male
1993-10-31Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 20 30th Anniversary - The Far Side 30th Anniversary - The Far Side
1994-05-23Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 21 Twice Born Twice Born
1995-02-14Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 22 Einstein: The Miracle Year Einstein: The Miracle Year
1996-03-17Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 23 Einstein: Fame Einstein: Fame
1996-03-18Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 24 BSE: The Invisible Enemy BSE: The Invisible Enemy
1996-11-17Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 25 BSE: The Human Experiment BSE: The Human Experiment
1996-11-18Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 26 Molecules With Sunglasses (Update) Molecules With Sunglasses (Update)
1996-12-09Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 27 Ice Mummies: The Ice Maiden Ice Mummies: The Ice Maiden
1997-01-30Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 28 Ice Mummies: A Life in Ice Ice Mummies: A Life in Ice
1997-02-06Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 29 Ice Mummies: Frozen in Heaven Ice Mummies: Frozen in Heaven
1997-02-13Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 30 Computers Don't Bite, Inside the Internet Computers Don't Bite, Inside the Internet
1997-05-17Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 31 Antarctica: The Ice Lives Antarctica: The Ice Lives
1997-10-30Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 32 Antarctica: The Ice Forms Antarctica: The Ice Forms
1997-11-06Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 33 Antarctica: The Ice Melts Antarctica: The Ice Melts
1997-11-13Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 34 Crash Crash
1998-01-08Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 35 Darwin: The Legacy Darwin: The Legacy
1998-03-29Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 36 Longitude Longitude
1999-01-04Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 37 Fat Files: Born to Be Fat Fat Files: Born to Be Fat
1999-01-07Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 38 Fat Files: Fixing Fat Fat Files: Fixing Fat
1999-01-14Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 39 Fat Files: Living on Air Fat Files: Living on Air
1999-01-21Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 40 Atlantis Uncovered Atlantis Uncovered
1999-10-28Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 41 Atlantis Reborn Atlantis Reborn
1999-11-04Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 42 Life and Death in the 21st Century: Living Forever Life and Death in the 21st Century: Living Forever
2000-01-04Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 43 Life and Death in the 21st Century: Future Plagues Life and Death in the 21st Century: Future Plagues
2000-01-05Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 44 Life and Death in the 21st Century: Designer Babies Life and Death in the 21st Century: Designer Babies
2000-01-06Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 45 Inside the Internet Inside the Internet
2000-06-10Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 46 Life on Mars Life on Mars
2001-01-11Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 47 Destination Mars Destination Mars
2001-01-18Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 48 What Sank the Kursk? What Sank the Kursk?
2001-08-08Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 49 First Olympians: A Horizon Special First Olympians: A Horizon Special
2004-07-23Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 50 Everest: Doctors in the Death Zone (1) Everest: Doctors in the Death Zone (1)
2007-09-23Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 51 Everest: Doctors in the Death Zone (2) Everest: Doctors in the Death Zone (2)
2007-09-30Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 52 Lost Horizons: The Big Bang Lost Horizons: The Big Bang
2008-09-04Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 53 How Mad Are You? (1) How Mad Are You? (1)
2008-11-11Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 54 How Mad Are You? (2) How Mad Are You? (2)
2008-11-18Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 55 40 Years on the Moon 40 Years on the Moon
2009-07-09Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 56 Pandemic: A Horizon Guide Pandemic: A Horizon Guide
2009-08-09Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 57 Mars: A Horizon Guide Mars: A Horizon Guide
2009-11-15Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 58 How Many People Can Live on Planet Earth? How Many People Can Live on Planet Earth?
2009-12-09Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 59 Diet: A Horizon Guide Diet: A Horizon Guide
2010-01-07Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 60 The End of God? A Horizon Guide to Science and Religion The End of God? A Horizon Guide to Science and Religion
2010-09-17Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 61 What Makes Us Clever? A Horizon Guide to Intelligence What Makes Us Clever? A Horizon Guide to Intelligence
2011-01-06Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 62 Japan Earthquake: A Horizon Special Japan Earthquake: A Horizon Special
2011-03-27Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 63 The Space Shuttle: A Horizon Guide The Space Shuttle: A Horizon Guide
2011-04-10Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 64 The End of the World? A Horizon Guide to Armageddon The End of the World? A Horizon Guide to Armageddon
2011-05-12Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 65 Carrot or Stick? A Horizon Guide to Raising Kids Carrot or Stick? A Horizon Guide to Raising Kids
2011-08-11Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 66 Extinct: A Horizon Guide to Dinosaurs Extinct: A Horizon Guide to Dinosaurs
2011-09-21Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 67 The Hunt for Higgs: A Horizon Special The Hunt for Higgs: A Horizon Special
2012-01-09Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 68 Woof! A Horizon Guide to Dogs Woof! A Horizon Guide to Dogs
2012-03-01Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 69 The Hunt for AI The Hunt for AI
2012-04-03Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 70 Stuff: A Horizon Guide to Materials Stuff: A Horizon Guide to Materials
2012-04-19Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 71 Blink: A Horizon Guide to the Senses Blink: A Horizon Guide to the Senses
2012-07-11Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 72 Immortal? A Horizon Guide to Ageing Immortal? A Horizon Guide to Ageing
2012-07-17Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 73 Mission to Mars: A Horizon Special Mission to Mars: A Horizon Special
2012-07-31Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 74 The Final Frontier: A Horizon Guide to the Universe The Final Frontier: A Horizon Guide to the Universe
2012-10-17Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 75 The Truth About Meteors: A Horizon Special The Truth About Meteors: A Horizon Special
2013-03-03Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 76 Mend Me: A Horizon Guide to Transplants Mend Me: A Horizon Guide to Transplants
2013-03-27Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 77 Tomorrow's World: A Horizon Special Tomorrow's World: A Horizon Special
2013-04-11Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 78 What's Killing Our Bees? A Horizon Special What's Killing Our Bees? A Horizon Special
2013-08-02Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 79 Comet of the Century: A Horizon Special Comet of the Century: A Horizon Special
2013-11-23Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 80 The £10 Million Challenge The £10 Million Challenge
2014-05-22Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 81 The Transit of Venus: A Horizon Special The Transit of Venus: A Horizon Special
2012-06-05Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 100 The Great British Drought The Great British Drought
1976-05-26Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 101 Festival 77: Horizon 2002 Festival 77: Horizon 2002
1977-08-26Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 102 Darwin's Dream Darwin's Dream
1977-09-23Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 103 A Killer in the Village - Update A Killer in the Village - Update
1984-04-02Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 104 Life Story Life Story
1987-04-27Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 105 Sex: A Horizon Guide Sex: A Horizon Guide
2013-09-11Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 106 Climate Change: A Horizon Guide Climate Change: A Horizon Guide
2015-03-04Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 107 The Mystery of Murder: A Horizon Guide The Mystery of Murder: A Horizon Guide
2015-03-09Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 108 The Horizon Guide to AI The Horizon Guide to AI
2018-09-04Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 109 Tim Peake Special - How to be an Astronaut Tim Peake Special - How to be an Astronaut
2015-12-13Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 110 Jimmy Carr and the Science of Laughter Jimmy Carr and the Science of Laughter
2016-09-11Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 111 Horizon Special: The Vaccine Horizon Special: The Vaccine
2021-06-16Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 112 The Life and Times of El Niño The Life and Times of El Niño
2006-01-03Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 113 Impact! A Horizon Guide to Plane Crashes Impact! A Horizon Guide to Plane Crashes
2013-10-14Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 114 Impact! A Horizon Guide to Car Crashes Impact! A Horizon Guide to Car Crashes
2013-10-21Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 115 Cat Watch 2014 - A Cat's Eye View Cat Watch 2014 - A Cat's Eye View
2014-10-07Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 116 Cat Watch 2014 - The Lion in Your Lap Cat Watch 2014 - The Lion in Your Lap
2014-10-08Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 117 Cat Watch 2014 - Cat Talk Cat Watch 2014 - Cat Talk
2014-10-09Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 118 What's The Right Diet For You? Part 1 What's The Right Diet For You? Part 1
2015-01-12Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 119 What's The Right Diet For You? Part 2 What's The Right Diet For You? Part 2
2015-01-13Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 120 What's The Right Diet For You? Part 3 What's The Right Diet For You? Part 3
2015-01-14Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 121 Journey to the Moon: A Horizon Special Journey to the Moon: A Horizon Special
2019-07-17Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 122 Alastair Campbell: Depression and Me Alastair Campbell: Depression and Me
2019-05-21Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 123 Ice Station Antarctica: Part One Ice Station Antarctica: Part One
2016-05-21Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 124 Ice Station Antarctica: Part Two Ice Station Antarctica: Part Two
2016-05-28Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 125 Coronavirus Special - Part 1 Coronavirus Special - Part 1
2020-04-09Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 126 Coronavirus Special - Part 2 Coronavirus Special - Part 2
2020-05-19Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 127 Coronavirus Special - What We Know Now Coronavirus Special - What We Know Now
2021-02-25Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 128 Horizon Special: The Vaccine Horizon Special: The Vaccine
2021-06-16Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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Horizon Season 0 :Episode 129 Tim Peake Special: How to Be an Astronaut Tim Peake Special: How to Be an Astronaut
2015-12-13Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
