In Search of... is a television series that was broadcast weekly from 1977 to 1982, devoted to mysterious phenomena. It was created after the success of three one-hour TV documentaries produced by creator Alan Landsburg: In Search of Ancient Astronauts in 1973, In Search of Ancient Mysteries and The Outer Space Connection, both in 1975. All three featured narration by Rod Serling, who was the initial choice to host the spin-off show. After Serling's death, Leonard Nimoy was selected to be the host.
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| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Other Voices | 1977-04-17 | 30 min |
| Season 1 | Episode 2 | Strange Visitors (aka Oracle Chamber) | 1977-04-24 | 30 min |
| Season 1 | Episode 3 | Ancient Aviators (aka Ancient Flight) | 1977-04-24 | 30 min |
| Season 1 | Episode 4 | The Bermuda Triangle | 1977-04-27 | 30 min |
| Season 1 | Episode 5 | Bigfoot | 1977-04-28 | 30 min |
| Season 1 | Episode 6 | Killer Bees | 1977-05-01 | 30 min |
| Season 1 | Episode 7 | Earthquakes | 1977-05-07 | 30 min |
| Season 1 | Episode 8 | The Mummy's Curse | 1977-05-14 | 30 min |
| Season 1 | Episode 9 | Martians | 1977-05-21 | 30 min |
| Season 1 | Episode 10 | Atlantis | 1977-05-22 | 30 min |
| Season 1 | Episode 11 | Psychic Detectives | 1977-05-26 | 30 min |
| Season 1 | Episode 12 | A Call from Space | 1977-05-28 | 30 min |
| Season 1 | Episode 13 | Learning ESP | 1977-05-28 | 30 min |
| Season 1 | Episode 14 | Nazi Plunder | 1977-05-29 | 30 min |
| Season 1 | Episode 15 | Amelia Earhart | 1977-06-01 | 30 min |
| Season 1 | Episode 16 | Dracula | 1977-06-08 | 30 min |
| Season 1 | Episode 17 | The Easter Island Massacre | 1977-06-15 | 30 min |
| Season 1 | Episode 18 | Ghosts | 1977-06-22 | 30 min |
| Season 1 | Episode 19 | Life After Death (aka Near Death Experiences) | 1977-06-29 | 30 min |
| Season 1 | Episode 20 | The Loch Ness Monster | 1977-07-06 | 30 min |
| Season 1 | Episode 21 | UFOs | 1977-07-13 | 30 min |
| Season 1 | Episode 22 | Voodoo | 1977-07-26 | 30 min |
| Season 1 | Episode 23 | Inca Treasures | 1977-08-11 | 30 min |
| Season 1 | Episode 24 | The Magic of Stonehenge | 1977-09-10 | 30 min |
| Season 2 | Episode 1 | The Lost Dutchman Mine (aka Mother Lode) | 1977-12-24 | 30 min |
| Season 2 | Episode 2 | The Man Who Would Not Die | 1977-12-31 | 30 min |
| Season 2 | Episode 3 | Firewalkers | 1978-01-05 | 30 min |
| Season 2 | Episode 4 | Mayan Mysteries | 1978-01-07 | 30 min |
| Season 2 | Episode 5 | Astrology | 1978-01-12 | 30 min |
| Season 2 | Episode 6 | Michael Rockefeller | 1978-01-21 | 30 min |
| Season 2 | Episode 7 | Hurricanes | 1978-01-26 | 30 min |
| Season 2 | Episode 8 | The Ogopogo Monster | 1978-01-28 | 30 min |
| Season 2 | Episode 9 | Pyramid Secrets | 1978-02-04 | 30 min |
| Season 2 | Episode 10 | Dead Sea Scrolls | 1978-02-09 | 30 min |
| Season 2 | Episode 11 | Reincarnation | 1978-02-11 | 30 min |
| Season 2 | Episode 12 | The Shark Worshippers | 1978-02-18 | 30 min |
| Season 2 | Episode 13 | Anastasia | 1978-02-23 | 30 min |
| Season 2 | Episode 14 | The Secrets of Life | 1978-02-25 | 30 min |
| Season 2 | Episode 15 | Immortality | 1978-02-27 | 30 min |
| Season 2 | Episode 16 | The Swamp Monster | 1978-03-04 | 30 min |
| Season 2 | Episode 17 | Hypnosis | 1978-03-09 | 30 min |
| Season 2 | Episode 18 | Troy | 1978-03-11 | 30 min |
| Season 2 | Episode 19 | Witch Doctors | 1978-03-18 | 30 min |
| Season 2 | Episode 20 | Haunted Castles | 1978-04-27 | 30 min |
| Season 2 | Episode 21 | Butch Cassidy | 1978-05-04 | 30 min |
| Season 2 | Episode 22 | Deadly Ants | 1978-05-11 | 30 min |
| Season 2 | Episode 23 | The Coming Ice Age | 1978-05-25 | 30 min |
| Season 2 | Episode 24 | The Garden of Eden | 1978-06-01 | 30 min |
| Season 3 | Episode 1 | UFO Captives | 1978-09-14 | 30 min |
| Season 3 | Episode 2 | Tornadoes | 1978-09-21 | 30 min |
| Season 3 | Episode 3 | Cloning | 1978-09-28 | 30 min |
| Season 3 | Episode 4 | Water Seekers (aka Dowsing) | 1978-10-05 | 30 min |
| Season 3 | Episode 5 | Jack the Ripper | 1978-10-12 | 30 min |
| Season 3 | Episode 6 | Cryogenics | 1978-10-19 | 30 min |
| Season 3 | Episode 7 | Siberian Fireball | 1978-10-26 | 30 min |
| Season 3 | Episode 8 | The Great Lakes Triangle | 1978-11-02 | 30 min |
| Season 3 | Episode 9 | Monster Hunters (aka Sasquatch) | 1978-11-09 | 30 min |
| Season 3 | Episode 10 | Bermuda Triangle Pirates | 1978-12-07 | 30 min |
| Season 3 | Episode 11 | Indian Astronomers (aka Mayan Legacy) | 1978-12-14 | 30 min |
| Season 3 | Episode 12 | Sherlock Holmes | 1978-12-21 | 30 min |
| Season 3 | Episode 13 | Lost Vikings | 1978-12-28 | 30 min |
| Season 3 | Episode 14 | Dreams and Nightmares | 1979-01-04 | 30 min |
| Season 3 | Episode 15 | Animal ESP | 1979-01-11 | 30 min |
| Season 3 | Episode 16 | The Money Pit Mystery (aka Captain Kidd) | 1979-01-18 | 30 min |
| Season 3 | Episode 17 | Psychic Sea Hunt | 1979-01-25 | 30 min |
| Season 3 | Episode 18 | The Angel of Death (aka Joseph Mengele) | 1979-02-01 | 30 min |
| Season 3 | Episode 19 | Noah's Flood | 1979-02-08 | 30 min |
| Season 3 | Episode 20 | The Diamond Curse | 1979-02-15 | 30 min |
| Season 3 | Episode 21 | Ghostly Stakeout | 1979-02-22 | 30 min |
| Season 3 | Episode 22 | Brain Power | 1979-03-17 | 30 min |
| Season 3 | Episode 23 | Sodom & Gomorrah | 1979-05-10 | 30 min |
| Season 3 | Episode 24 | King Tut | 1979-05-17 | 30 min |
| Season 4 | Episode 1 | Tidal Waves | 1979-09-20 | 30 min |
| Season 4 | Episode 2 | Carlos, the Most Wanted Man in the World | 1979-09-27 | 30 min |
| Season 4 | Episode 3 | The Amityville Horror | 1979-10-04 | 30 min |
| Season 4 | Episode 4 | UFO Australia | 1979-10-11 | 30 min |
| Season 4 | Episode 5 | Immortal Sharks | 1979-10-18 | 30 min |
| Season 4 | Episode 6 | The Lost Colony of Roanoke | 1979-10-25 | 30 min |
| Season 4 | Episode 7 | The Shroud of Turin | 1979-11-08 | 30 min |
| Season 4 | Episode 8 | Mexican Pyramids | 1979-11-15 | 30 min |
| Season 4 | Episode 9 | The Abominable Snowman | 1979-11-22 | 30 min |
| Season 4 | Episode 10 | Pompeii | 1979-11-27 | 30 min |
| Season 4 | Episode 11 | D.B. Cooper | 1979-12-06 | 30 min |
| Season 4 | Episode 12 | The Ten Commandments (aka Mount Sinai) | 1979-12-13 | 30 min |
| Season 4 | Episode 13 | The Dark Star (aka The Dogons) | 1979-12-20 | 30 min |
| Season 4 | Episode 14 | The San Andreas Fault | 1979-12-27 | 30 min |
| Season 4 | Episode 15 | The Missing Heir | 1980-01-03 | 30 min |
| Season 4 | Episode 16 | Vincent Van Gogh | 1980-01-10 | 30 min |
| Season 4 | Episode 17 | Wild Children | 1980-01-17 | 30 min |
| Season 4 | Episode 18 | The Ghost Ship (aka Mary Celeste) | 1980-01-24 | 30 min |
| Season 4 | Episode 19 | Earth Visitors | 1980-01-31 | 30 min |
| Season 4 | Episode 20 | John the Baptist | 1980-02-07 | 30 min |
| Season 4 | Episode 21 | Air Disaster Prediction | 1980-02-14 | 30 min |
| Season 4 | Episode 22 | The Bimini Wall | 1980-02-21 | 30 min |
| Season 4 | Episode 23 | Glenn Miller | 1980-03-07 | 30 min |
| Season 4 | Episode 24 | Past Lives | 1980-03-14 | 30 min |
| Season 5 | Episode 1 | UFO Coverups | 1980-09-20 | 30 min |
| Season 5 | Episode 2 | Faith Healing | 1980-09-27 | 30 min |
| Season 5 | Episode 3 | Lee Harvey Oswald | 1980-10-04 | 30 min |
| Season 5 | Episode 4 | Daredevil Death Wish | 1980-10-11 | 30 min |
| Season 5 | Episode 5 | Life After Life (aka Out of Body Experiences) | 1980-10-18 | 30 min |
| Season 5 | Episode 6 | Moon Madness | 1980-10-25 | 30 min |
| Season 5 | Episode 7 | Dangerous Volcanoes | 1980-11-01 | 30 min |
| Season 5 | Episode 8 | The Lindbergh Kidnapping | 1980-11-08 | 30 min |
| Season 5 | Episode 9 | Acupuncture | 1980-11-15 | 30 min |
| Season 5 | Episode 10 | Jimmy Hoffa | 1980-11-22 | 30 min |
| Season 5 | Episode 11 | Fountain of Youth | 1980-11-29 | 30 min |
| Season 5 | Episode 12 | Laugh Therapy | 1980-12-06 | 30 min |
| Season 5 | Episode 13 | Salem Witches | 1980-12-13 | 30 min |
| Season 5 | Episode 14 | Super Children | 1980-12-27 | 30 min |
| Season 5 | Episode 15 | The Great Wall of China | 1981-01-10 | 30 min |
| Season 5 | Episode 16 | The Castle of Secrets (aka Coral Castle) | 1981-01-24 | 30 min |
| Season 5 | Episode 17 | Great Lovers | 1981-01-31 | 30 min |
| Season 5 | Episode 18 | The Holy Grail | 1981-02-07 | 30 min |
| Season 5 | Episode 19 | The Death of Marilyn Monroe | 1981-02-14 | 30 min |
| Season 5 | Episode 20 | Chinese Explorers | 1981-02-21 | 30 min |
| Season 5 | Episode 21 | The Hindenburg Mystery | 1981-02-21 | 30 min |
| Season 5 | Episode 22 | The End of the World | 1981-04-30 | 30 min |
| Season 5 | Episode 23 | The Lusitania | 1981-05-16 | 30 min |
| Season 5 | Episode 24 | Sun Worshippers | 1981-05-19 | 30 min |
| Season 6 | Episode 1 | Jesse James | 1981-09-21 | 30 min |
| Season 6 | Episode 2 | Biofeedback | 1981-09-28 | 30 min |
| Season 6 | Episode 3 | Ghosts in Photography | 1981-10-05 | 30 min |
| Season 6 | Episode 4 | M.I.A.'s | 1981-10-12 | 30 min |
| Season 6 | Episode 5 | The Elephant Man | 1981-10-19 | 30 min |
| Season 6 | Episode 6 | The Lincoln Conspiracy | 1981-10-26 | 30 min |
| Season 6 | Episode 7 | Jim Jones | 1981-10-31 | 30 min |
| Season 6 | Episode 8 | King Solomon's Mines | 1981-11-02 | 30 min |
| Season 6 | Episode 9 | The Tower of London Murders | 1981-11-09 | 30 min |
| Season 6 | Episode 10 | The Aztec Conquest | 1981-11-16 | 30 min |
| Season 6 | Episode 11 | Houdini's Secrets | 1981-11-21 | 30 min |
| Season 6 | Episode 12 | Hiroshima Survivors | 1981-11-23 | 30 min |
| Season 6 | Episode 13 | The Titanic | 1981-11-30 | 30 min |
| Season 6 | Episode 14 | Future Life | 1981-12-06 | 30 min |
| Season 6 | Episode 15 | Nostradamus | 1981-12-13 | 30 min |
| Season 6 | Episode 16 | Spirit Voices | 1981-12-20 | 30 min |
| Season 6 | Episode 17 | The Human Aura | 1982-01-03 | 30 min |
| Season 6 | Episode 18 | The Missing Link | 1982-01-17 | 30 min |
| Season 6 | Episode 19 | Time & Space Travel | 1982-01-24 | 30 min |
| Season 6 | Episode 20 | Eva Braun | 1982-02-01 | 30 min |
| Season 6 | Episode 21 | The Walls of Jericho | 1982-02-08 | 30 min |
| Season 6 | Episode 22 | Bishop Pike | 1982-02-15 | 30 min |
| Season 6 | Episode 23 | The Ultimate Disaster | 1982-02-22 | 30 min |
| Season 6 | Episode 24 | Life Before Birth | 1982-03-01 | 30 min |
| Season 7 | Episode 1 | Hell / Vampires / Tesla | 2002-10-04 | 30 min |
| Season 7 | Episode 2 | Witchcraft / Maneaters / Ghosts | 2002-10-11 | 30 min |
| Season 7 | Episode 3 | Werewolves / Mummies / Reincarnation | 2002-10-18 | 30 min |
| Season 7 | Episode 4 | Ghost / Stigmata / Zombies | 2002-10-25 | 30 min |
| Season 7 | Episode 5 | Catacomb / Bigfoot / Rennes | 2002-11-01 | 30 min |
| Season 7 | Episode 6 | Haunted / Doomsday / Devil | 2002-11-08 | 30 min |
| Season 7 | Episode 7 | Lovers / Possession / Robot | 2002-11-15 | 30 min |
| Season 7 | Episode 8 | Shroud / Alien / Faith | 2002-11-22 | 30 min |
| Production | Alan Landsburg | Producer |
| Production | Alan Landsburg | Executive Producer |
