Q.E.D

Season 1

1982 · 9 episodes

• 1 1. How to Pick Up Girls, Win Arguments and Influence People Apr 6, 1982
• 2 2. Light Creatures of the Night Apr 13, 1982
• 3 3. The Proof of the Pudding Apr 20, 1982
• 4 4. Spy in the Sky Apr 27, 1982
• 5 5. Beyond the Six Second Mile May 4, 1982
• 6 6. Music, Music, Music May 11, 1982
• 7 7. Riding on Air May 18, 1982
• 8 8. A Guide to Armageddon Jul 26, 1982 30 min
• 10 10. The Underground Test Jul 30, 1982

Season 2

1982 · 7 episodes

• 1 1. Before the Massacre Oct 20, 1982
• 2 2. The Invisible World Oct 27, 1982
• 3 3. Shroud of Jesus: Fact or Fake? Nov 3, 1982
• 4 4. The Riddle of Sleep Nov 10, 1982
• 5 5. Why Things Go Wrong Nov 17, 1982
• 6 6. The Horse That Doped Itself Nov 24, 1982
• 7 7. Big Day at Black Rock Dec 1, 1982

Season 3

1983 · 7 episodes

• 1 1. Old Wives' Tales Mar 2, 1983
• 2 2. Bend! Bend! Bend! Mar 9, 1983
• 3 3. Acts of God Mar 16, 1983
• 4 4. The Long Night of the Lion Mar 23, 1983
• 5 5. Bugging in Six Easy Lessons Mar 30, 1983
• 6 6. Simon's War Apr 6, 1983
• 7 7. Faster Than the Sun Apr 13, 1983

Season 4

1983 · 6 episodes

• 1 1. Big Brother's Little Test Nov 16, 1983
• 2 2. How to Be a Professional Mum and Dad Nov 23, 1983
• 3 3. The Future Is Further Away Than You Think Nov 30, 1983
• 4 4. The People's Medicine Dec 7, 1983
• 5 5. The Bat, the Blossom and the Biologist Dec 14, 1983
• 6 6. Eyewitness Evidence... Fact or Fiction? Dec 21, 1983

Season 5

1984 · 8 episodes

• 1 1. Testing, Testing Mar 28, 1984
• 2 2. Handful of Light Apr 4, 1984
• 3 3. In at the Deep End Apr 11, 1984
• 4 4. The Quest for Mastermind's Brain Apr 18, 1984
• 5 5. The War of Words Down Under Apr 25, 1984
• 6 6. Ray of Hope May 9, 1984
• 7 7. A Walk on the Wild Side May 16, 1984
• 8 8. Pozzuoli: Death of a City May 23, 1984

Season 6

1985 · 13 episodes

• 1 1. The Science of Sexual Attraction Mar 6, 1985
• 2 2. The Magic Picture Show Mar 13, 1985
• 3 3. The 300 Million Years War Mar 20, 1985
• 4 4. The Long Watch: Fifty Years of Radar Mar 27, 1985
• 5 5. A Race Against Time Apr 3, 1985
• 6 6. The Body in the Bog Apr 10, 1985
• 7 7. Riddles of Ball and Cue Apr 17, 1985
• 8 8. Operation Otter Apr 24, 1985
• 9 9. Another Little Drink Won't Do Us Any Harm May 1, 1985
• 10 10. Stammering Cured: Andrew R. Bell May 15, 1985
• 11 11. Gina: The Last Campbell May 22, 1985
• 12 12. Robots: Taking the Biscuit? May 29, 1985
• 13 13. Simon's Peace Jun 12, 1985

Season 7

1986 · 13 episodes

• 1 1. Round Britain Whizz Feb 19, 1986
• 2 2. Sight for Sara Feb 26, 1986
• 3 3. Robots: Taking the Biscuit Mar 5, 1986
• 4 4. Understanding Rape Mar 12, 1986
• 5 5. The Most Swirling, Swinging, Sliding, Spinning, Up-and-Down Ride of Your Life Mar 19, 1986
• 6 6. New Lives for Old Mar 26, 1986
• 7 7. The Man Who Walks on Fire Apr 2, 1986
• 8 8. The Eleven-Minute Mile Apr 9, 1986
• 9 9. The Meaning of Dreams Apr 16, 1986
• 10 10. A Wolf in Dog's Clothing Apr 23, 1986
• 11 11. Mark, His Sister and the Scientists Apr 30, 1986
• 12 12. The Body Out of the Bog: Second Report May 14, 1986
• 13 13. The Invisible Killer May 21, 1986

Season 8

1987 · 15 episodes

• 1 1. Claws: A New Kind of Dinosaur Feb 4, 1987
• 2 2. The Foolish Wise Ones Feb 11, 1987
• 3 3. Before Your Time Feb 18, 1987
• 4 4. A Fall from Grace Feb 25, 1987
• 5 5. Your Biological Guide to AIDS Mar 4, 1987
• 6 6. The World's Longest Flight Mar 11, 1987
• 7 7. The World's Longest Drop Mar 18, 1987
• 8 8. The Struggles of the Swan Mar 25, 1987
• 9 9. Murder on the Bluebell Line Apr 1, 1987
• 10 10. Breaking the Pain Barrier Apr 8, 1987
• 11 11. Alpha: How to Succeed Without Really Trying Apr 15, 1987
• 12 12. Eating Earth Apr 22, 1987
• 13 13. I, Daedalus or David Jones: The Movie Apr 29, 1987
• 14 14. Four Go Off to Space Camp May 6, 1987
• 15 15. Jean: A Battle with Obsession Sep 9, 1987

Season 9

1988 · 12 episodes

• 1 1. The Magic of Memory Jan 6, 1988
• 2 2. Sheer Genius Jan 13, 1988
• 3 3. Your Child's Diet on Trial Jan 20, 1988
• 4 4. Glimpses of Death Jan 27, 1988
• 5 5. To Fly Like a Bird Feb 3, 1988
• 6 6. Mad Dogs and an Englishman Feb 24, 1988
• 7 7. Whirlpools in the Air Mar 9, 1988
• 8 8. The Snooker Machine Mar 16, 1988
• 9 9. Putting You in the Picture Mar 23, 1988
• 10 10. With a Goal in Mind Mar 30, 1988
• 11 11. Breaking the Silence Apr 6, 1988
• 12 12. It's Not Easy Being a Dolphin Apr 13, 1988

Season 10

1989 · 13 episodes

• 1 1. The Battle of the Sexes Feb 1, 1989
• 2 2. The Man Who Believes in Body Transplants Feb 8, 1989
• 3 3. Racing with the Sun Feb 15, 1989
• 4 4. An Everday Miracle 1: A Completely Bad Luck Situation Feb 22, 1989
• 5 5. An Everday Miracle 2: Back to the Menders Mar 1, 1989
• 6 6. The Mystery of Tears Mar 8, 1989
• 7 7. John's Not Mad Mar 15, 1989
• 8 8. The Riddle of the Turin Shroud Mar 22, 1989
• 9 9. The Morgan Treatment Mar 29, 1989
• 10 10. Simon's Triumph Apr 5, 1989
• 11 11. The Write Stuff Apr 12, 1989
• 12 12. Keyhole Surgery Apr 19, 1989
• 13 13. A Case of Spontaneous Human Combustion? Apr 26, 1989

Season 11

1990 · 14 episodes

• 1 1. The Steroid Myth Jan 3, 1990
• 2 2. Sweet F.A. Jan 10, 1990
• 3 3. My Best Friend's a Computer Jan 17, 1990
• 4 4. A Rainforest Remedy Jan 24, 1990
• 5 5. The House That Bob Built Jan 31, 1990
• 6 6. Welcome to Fat Camp Feb 7, 1990
• 7 7. Once Upon a Time Feb 14, 1990
• 8 8. The Love Laboratory Feb 21, 1990
• 9 9. The Long Underarm of the Law Feb 28, 1990
• 10 10. Back to the Drawing Board Mar 7, 1990
• 11 11. A Man Who Writes Birdsong Mar 14, 1990
• 12 12. What's So Funny About That? Mar 21, 1990
• 13 13. The Last Resort Mar 28, 1990
• 14 14. Love Child Aug 9, 1990

Season 12

1991 · 14 episodes

• 1 1. Flying Horses Jan 2, 1991
• 2 2. Homoeopathy: Medicine or Magic? Jan 9, 1991
• 3 3. A Slim Chance of Sight Jan 16, 1991
• 4 4. Murphy's Law Jan 23, 1991
• 5 5. Panic Attack Jan 30, 1991
• 6 6. Why Planes Fly - and Other Things Feb 6, 1991
• 7 7. The Boy Who Draws Buildings Feb 13, 1991
• 8 8. Whatever Happened to the Leisure Age? Feb 20, 1991
• 9 9. Your Child's Diet on Trial: The Verdict Feb 27, 1991
• 10 10. The Power of Sound Mar 6, 1991
• 11 11. Smoking Mar 13, 1991
• 12 12. On His Own Two Feet Mar 20, 1991
• 13 13. Granny's Greatest Thrill Mar 27, 1991
• 14 14. Cutting a Path Through the Heart Apr 3, 1991

Season 13

1992 · 10 episodes

• 1 1. The Battle of the Bottle Snatchers Feb 12, 1992
• 2 2. When to Change Faces Feb 19, 1992
• 3 3. Gripping Stuff Feb 26, 1992
• 4 4. Supertots Mar 4, 1992
• 5 5. When It Happens to You Mar 11, 1992
• 6 6. Miracle Man Mar 18, 1992
• 7 7. Little Monsters Mar 25, 1992
• 8 8. Simon's Return Apr 1, 1992
• 9 9. Propping Up Pisa Apr 8, 1992
• 10 10. Night Terrors Apr 15, 1992

Season 14

1993 · 10 episodes

• 1 1. The Bike Mar 10, 1993
• 2 2. Misha Mar 17, 1993
• 3 3. Dark Side of the Sun Mar 24, 1993
• 4 4. Walking Back to Happiness Mar 31, 1993
• 5 5. Knights of the Shining Piddock Apr 7, 1993
• 6 6. Tokyo Earthquake Apr 14, 1993
• 7 7. Art and Chips Apr 21, 1993
• 8 8. A Chinese Cure for Eczema? Apr 28, 1993
• 9 9. The Family Game May 5, 1993
• 10 10. Gallop to Freedom May 12, 1993

Season 15

1994 · 7 episodes

• 1 1. Is Love Enough? Jan 12, 1994
• 2 2. Trauma Mar 30, 1994
• 3 3. Craig's Boot Apr 6, 1994
• 4 4. Fishman of Saughton Jail Apr 13, 1994
• 5 5. Lifeline Express Apr 20, 1994
• 6 6. Plastic Fantastic Apr 27, 1994
• 7 7. Casualities of the Wild May 4, 1994

Season 16

1994 · 6 episodes

• 1 1. Curse of the Killer Bug Jul 14, 1994
• 2 2. A Song for Annie Jul 21, 1994
• 3 3. Revolting Dogs Jul 28, 1994
• 4 4. Live Luggage Aug 4, 1994
• 5 5. Food Fights Aug 11, 1994
• 6 6. The Maggot Mogul Aug 18, 1994

Season 17

1995 · 11 episodes

• 1 1. Cot Death Mar 21, 1995
• 2 2. Sex Acts Mar 28, 1995
• 3 3. Sleeping It Off Apr 4, 1995
• 4 4. Pigeon Pie Apr 11, 1995
• 5 5. Talented Young Chef Apr 18, 1995
• 6 6. I'm Not Stupid Apr 25, 1995
• 7 7. Lost for Words Jul 25, 1995
• 8 8. Talking to Horses Aug 1, 1995
• 9 9. Clockwork Radio Aug 8, 1995
• 10 10. A Hole in Fred's Head Aug 15, 1995
• 11 11. The Fall and Rise of Sergeant 'Reggie' Perrin Aug 22, 1995

Season 18

1996 · 12 episodes

• 1 1. Brave Heart May 22, 1996
• 2 2. How to Win Grand Prix May 29, 1996
• 3 3. You Only Live Once Jun 5, 1996
• 4 4. The Outcasts Jun 12, 1996
• 5 5. Baby in a Frame Jun 27, 1996
• 6 6. Sunshine and Scattered Showers Jul 4, 1996
• 7 7. The Secret Life of Seahorses Jul 11, 1996
• 8 8. How to Be Happy Aug 28, 1996
• 9 9. Return of the Bloodsuckers Sep 4, 1996
• 10 10. Life on Ice Sep 11, 1996
• 11 11. Pride and Prejudice Sep 18, 1996
• 12 12. Clockwork Radio Update Sep 25, 1996

Season 19

1997 · 10 episodes

• 1 1. Superspecs May 20, 1997
• 2 2. The True Story of Joseph Merrick: 'The Elephant Man' May 27, 1997
• 3 3. Move Over 'Babe'! Jun 3, 1997
• 4 4. Cause of Death Jul 9, 1997
• 5 5. Monty Roberts: A Real Horse Whisperer Jul 16, 1997
• 6 6. Nerve Transplant Jul 23, 1997
• 7 7. Challenging Children: Baby Love Aug 4, 1997
• 8 8. Challenging Children: I Want My Little Boy Back Sep 12, 1997
• 9 9. Challenging Children: Crisis in the Classroom Sep 18, 1997
• 10 10. Challenging Children: A Gifted Child Sep 25, 1997

Season 20

1998 · 13 episodes

• 1 1. Breathless Jul 19, 1998
• 2 2. Prisoners of the Forgotten Plague Jul 29, 1998
• 3 3. Deadly Secrets Aug 5, 1998
• 4 4. The Quest for the Quagga Aug 12, 1998
• 5 5. Spontaneous Human Combustion Aug 26, 1998
• 6 6. Hope for Helen Sep 27, 1998
• 7 7. Bubble Babies Oct 6, 1998
• 8 8. Betsy and the Bongo Oct 12, 1998
• 9 9. Call of the Deep Nov 10, 1998
• 10 10. Secrets of the Cloud People Nov 18, 1998
• 11 11. The Bionic Woman Dec 1, 1998
• 12 12. Joella's Journey Dec 9, 1998
• 13 13. Saving Trudy Apr 12, 1999