The Robinson family are launched into space to colonize a planet in the Alpha Centauri system but an act of sabotage forces them off course and they become... Lost in Space.
Season One: 29 episodes
| Ep | PN | Airdate | Title |
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| | unaired | No Place to Hide (pilot) |
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| 1 | 8501 | Sep 15/65 | The Reluctant Stowaway |
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| 2 | 8502 | Sep 22/65 | The Derelict |
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| 3 | 8503 | Sep 29/65 | Island in the Sky |
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| 4 | 8504 | Oct 06/65 | There Were Giants in the Earth |
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| 5 | 8505 | Oct 13/65 | The Hungry Sea |
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| 6 | 8506 | Oct 20/65 | Welcome Stranger |
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| 7 | 8507 | Oct 27/65 | My Friend, Mr. Nobody |
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| 8 | 8508 | Nov 03/65 | Invaders From the Fifth Dimension |
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| 9 | 8509 | Nov 10/65 | The Oasis |
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| 10 | 8510 | Nov 17/65 | The Sky is Falling |
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| 11 | 8512 | Nov 24/65 | Wish Upon a Star |
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| 12 | 8511 | Dec 01/65 | The Raft |
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| 13 | 8513 | Dec 08/65 | One of Our Dogs is Missing |
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| 14 | 8514 | Dec 15/65 | Attack of the Monster Plants |
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| 15 | 8515 | Dec 29/65 | Return From Outer Space |
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| 16 | 8516 | Jan 12/66 | The Keeper |
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| 17 | 8517 | Jan 19/66 | The Keeper, Part 2 |
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| 18 | 8518 | Jan 26/66 | The Sky Pirate |
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| 19 | 8519 | Feb 02/66 | Ghost in Space |
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| 20 | 8521 | Feb 09/66 | The War of the Robots |
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| 21 | 8520 | Feb 16/66 | The Magic Mirror |
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| 22 | 8522 | Mar 02/66 | The Challenge |
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| 23 | 8523 | Mar 09/66 | The Space Trader |
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| 24 | 8524 | Mar 16/66 | His Majesty Smith |
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| 25 | 8525 | Mar 30/66 | The Space Croppers |
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| 26 | 8526 | Apr 06/66 | All That Glitters |
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| 27 | 8527 | Apr 13/66 | Lost Civilization |
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| 28 | 8528 | Apr 20/66 | A Change of Space |
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| 29 | 8529 | Apr 27/66 | Follow the Leader |
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Season Two: 30 episodes
| Ep | PN | Airdate | Title |
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| 30 | 9501 | Sep 14/66 | Blast Off Into Space |
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| 31 | 9502 | Sep 21/66 | Wild Adventure |
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| 32 | 9503 | Sep 28/66 | The Ghost Planet |
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| 33 | 9504 | Oct 05/66 | Forbidden World |
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| 34 | 9505 | Oct 12/66 | Space Circus |
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| 35 | 9506 | Oct 19/66 | The Prisoners of Space |
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| 36 | 9507 | Oct 26/66 | The Android Machine |
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| 37 | 9508 | Nov 02/66 | The Deadly Games of Gamma 6 |
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| 38 | 9509 | Nov 09/66 | The Thief From Outer Space |
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| 39 | 9510 | Nov 16/66 | The Curse of Cousin Smith |
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| 40 | 9512 | Nov 30/66 | West of Mars |
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| 41 | 9513 | Dec 07/66 | A Visit to Hades |
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| 42 | 9514 | Dec 14/66 | The Wreck of the Robot |
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| 43 | 9511 | Dec 21/66 | The Dream Monster |
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| 44 | 9515 | Dec 28/66 | The Golden Man |
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| 45 | 9516 | Jan 04/67 | The Girl From the Green Dimension |
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| 46 | 9517 | Jan 11/67 | The Questing Beast |
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| 47 | 9518 | Jan 25/67 | The Toymaker |
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| 48 | 9519 | Feb 01/67 | Mutiny in Space |
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| 49 | 9520 | Feb 08/67 | The Space Vikings |
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| 50 | 9522 | Feb 15/67 | Rocket to Earth |
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| 51 | 9525 | Feb 22/67 | The Cave of the Wizards |
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| 52 | 9521 | Mar 01/67 | Treasure of the Lost Planet |
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| 53 | 9524 | Mar 08/67 | Revolt of the Androids |
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| 54 | 9526 | Mar 15/67 | The Colonists |
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| 55 | 9527 | Mar 22/67 | Trip Through the Robot |
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| 56 | 9528 | Mar 29/67 | The Phantom Family |
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| 57 | 9523 | Apr 05/67 | The Mechanical Men |
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| 58 | 9529 | Apr 12/67 | The Astral Traveler |
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| 59 | 9530 | Apr 26/67 | The Galaxy Gift |
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Season Three: 24 episodes
| Ep | PN | Airdate | Title |
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| 60 | 1501 | Sep 06/67 | The Condemned of Space |
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| 61 | 1505 | Sep 13/67 | Visit to a Hostile Planet |
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| 62 | 1506 | Sep 20/67 | Kidnapped in Space |
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| 63 | 1502 | Sep 27/67 | Hunter's Moon |
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| 64 | 1503 | Oct 04/67 | The Space Primevals |
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| 65 | 1508 | Oct 11/67 | The Space Destructors |
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| 66 | 1509 | Oct 18/67 | The Haunted Lighthouse |
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| 67 | 1507 | Oct 25/67 | Flight Into the Future |
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| 68 | 1510 | Nov 08/67 | Collision of the Planets |
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| 69 | 1511 | Nov 15/67 | The Space Creature |
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| 70 | 1504 | Nov 22/67 | Deadliest of the Species |
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| 71 | 1514 | Nov 29/67 | A Day at the Zoo |
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| 72 | 1515 | Dec 13/67 | Two Weeks in Space |
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| 73 | 1513 | Dec 20/67 | Castles in Space |
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| 74 | 1512 | Dec 27/67 | The Anti-Matter Man |
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| 75 | 1516 | Jan 03/68 | Target: Earth |
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| 76 | 1519 | Jan 10/68 | Princess of Space |
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| 77 | 1518 | Jan 17/68 | The Time Merchant |
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| 78 | 1520 | Jan 24/68 | The Promised Planet |
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| 79 | 1522 | Jan 31/68 | Fugitives in Space |
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| 80 | 1523 | Feb 14/68 | Space Beauty |
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| 81 | 1517 | Feb 21/68 | The Flaming Planet |
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| 82 | 1521 | Feb 28/68 | The Great Vegetable Rebellion |
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| 83 | 1524 | Mar 06/68 | Junkyard of Space |
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