List of episodes for the X Minus One radio show.
1955
edit| Title | Air Date | Author |
|---|---|---|
| 1. "And The Moon Be Still As Bright" | April 22 | Ray Bradbury (adapted by Ernest Kinoy) |
| 2. "No Contact" | April 24 | George Lefferts (story by George Lefferts & Ernest Kinoy) |
| 3. "The Parade" | May 1 | George Lefferts |
| 4. "Mars is Heaven" | May 8 | Ray Bradbury (adapted by Ernest Kinoy) |
| 5. "Universe" | May 15 | Robert A. Heinlein (adapted by George Lefferts) |
| 6. "Knock" | May 22 | Fredric Brown (adapted by Ernest Kinoy) |
| 7. "The Man in the Moon" | May 29 | George Lefferts |
| 8. "Perigi's Wonderful Dolls" | June 5 | George Lefferts |
| 9. "The Green Hills of Earth" | July 7 | Robert A. Heinlein (adapted by Ernest Kinoy) |
| 10. "Dr. Grimshaw's Sanitorium" | July 14 | Fletcher Pratt (adapted by George Lefferts) |
| 11. "Nightmare" | July 21 | Stephen Vincent Benét (adapted by George Lefferts; based on the poem "The Revolt of the Machines") |
| 12. "The Embassy" | July 28 | Donald A. Wollheim (adapted by George Lefferts) |
| 13. "The Veldt" | August 4 | Ray Bradbury (adapted by Ernest Kinoy) |
| 14. "Almost Human" | August 11 | Robert Bloch (adapted by George Lefferts) |
| 15. "Courtesy" | August 18 | Clifford D. Simak (adapted by George Lefferts) |
| 16. "Cold Equations" | August 25 | Tom Godwin (adapted by George Lefferts) |
| 17. "Shanghaied" | September 1 | Ernest Kinoy |
| 18. "The Martian Death March" | September 8 | Ernest Kinoy |
| 19. "The Castaways" | September 15 | Ernest Kinoy |
| 20. "And The Moon Be Still As Bright" (Repeat) | September 22 | Ray Bradbury (adapted by Ernest Kinoy) |
| 21. "First Contact" | October 6 | Murray Leinster (adapted by Howard Rodman) |
| 22. "Child's Play" | October 20 | William Tenn (adapted by George Lefferts) |
| 23. "Requiem" | October 27 | Robert A. Heinlein (adapted by Ernest Kinoy) |
| 24. "Hello, Tomorrow" | November 3 | George Lefferts |
| 25. "Dwellers in Silence" | November 10 | Ray Bradbury (adapted by George Lefferts) |
| 26. "The Outer Limit" | November 16 | Graham Doar (adapted by Ernest Kinoy) |
| 27. "Zero Hour" | November 23 | Ray Bradbury (adapted by George Lefferts) |
| 28. "The Vital Factor" | November 30 | Nelson Bond (adapted by Howard Rodman) |
| 29. "Nightfall" | December 7 | Isaac Asimov (adapted by Ernest Kinoy) |
| 30. "To the Future" | December 14 | Ray Bradbury (adapted by Ernest Kinoy from "The Fox and the Forest") |
| 31. "Marionettes, Inc." | December 21 | Ray Bradbury (adapted by George Lefferts) |
| 32. "A Logic Named Joe" | December 28 | Murray Leinster (adapted by Claris A. Ross) |
1956
edit| Title | Air Date | Author |
|---|---|---|
| 33. "The Roads Must Roll" | January 4 | Robert A. Heinlein (adapted by Ernest Kinoy) |
| 34. "Time and Time Again" | January 11 | H. Beam Piper (adapted by Ernest Kinoy) |
| 35. "Perigi's Wonderful Dolls" (Rebroadcast) | January 18 | George Lefferts |
| 36. "The Parade" (Rebroadcast) | January 25 | George Lefferts |
| 37. "The Cave of Night" | February 1 | James E. Gunn (adapted by Ernest Kinoy) |
| 38. "C-Chute" | February 8 | Isaac Asimov (adapted by George Lefferts) |
| 39. "Skulking Permit" | February 15 | Robert Sheckley (adapted by Ernest Kinoy) |
| 40. "Junkyard" | February 22 | Clifford D. Simak (adapted by George Lefferts) |
| 41. "Hello, Tomorrow" (Repeat) | February 29 | George Lefferts |
| 42. "A Gun for Dinosaur" | March 7 | L. Sprague de Camp (adapted by Ernest Kinoy) |
| 43. "Tunnel Under the World" | March 14 | Frederik Pohl (adapted by George Lefferts) |
| 44. "A Thousand Dollars a Plate" | March 21 | Jack McKenty (adapted by Ernest Kinoy) |
| 45. "A Pail of Air" | March 28 | Fritz Leiber (adapted by George Lefferts) |
| 46. "How-2" | April 3 | Clifford D. Simak (adapted by William Welch) |
| 47. "Star, Bright" | April 10 | Mark Clifton (adapted by George Lefferts) |
| 48. "Jaywalker" | April 17 | Ross Rocklynne (adapted by George Leferts) |
| 49. "The Sense of Wonder" | April 24 | Milton Lesser (adapted by George Lefferts) |
| 50. "Sea Legs" | May 1 | Frank Quattrocchi (adapted by George Lefferts) |
| 51. "The Seventh Order" | May 8 | Jerry Sohl (adapted by George Lefferts) |
| 52. "Hallucination Orbit" | May 15 | J. T. McIntosh (adapted by Ernest Kinoy) |
| 53. "The Defenders" | May 22 | Philip K. Dick (adapted by George Lefferts) |
| 54. "Lulungomeena" | May 29 | Gordon R. Dickson (adapted by George Lefferts) |
| 55. "Project Mastodon" | June 5 | Clifford D. Simak (adapted by Ernest Kinoy) |
| 56. "If You Was a Moklin" | June 12 | Murray Leinster (adapted by Ernest Kinoy) |
| 57. "Project Trojan" | June 19 | Ernest Kinoy |
| 58. "Wherever You May Be" | June 26 | James E. Gunn (adapted by Ernest Kinoy) |
| 59. "Mr. Costello, Hero" | July 3 | Theodore Sturgeon (adapted by George Lefferts) |
| 60. "Bad Medicine" | July 10 | Finn O'Donnevan (adapted by George Lefferts) |
| 61. "The Old Die Rich" | July 17 | H. L. Gold (adapted by Ernest Kinoy) |
| 62. "The Stars Are the Styx" | July 24 | Theodore Sturgeon (adapted by Ernest Kinoy) |
| 63. "Student Body" | July 31 | F. L. Wallace (adapted by Ernest Kinoy) |
| 64. "The Last Martian" | August 7 | Fredric Brown (adapted by George Lefferts) |
| 65. "The Snowball Effect" | August 14 | Katherine MacLean (adapted by Ernest Kinoy) |
| 66. "Surface Tension" | August 28 | James Blish (adapted by George Lefferts) |
| 67. "Tunnel Under the World" (Rebroadcast) | September 4 | Frederik Pohl (adapted by George Lefferts) |
| 68. "The Lifeboat Mutiny" | September 11 | Robert Sheckley (adapted by Ernest Kinoy) |
| 69. "The Map Makers" | September 26 | Frederik Pohl (adapted by Ernest Kinoy) |
| 70. "Protective Mimicry" | October 3 | Algis Budrys (adapted by Ernest Kinoy) |
| 71. "Colony" | October 10 | Philip K. Dick (adapted by Ernest Kinoy) |
| 72. "Soldier Boy" | October 17 | Michael Shaara (adapted by Ernest Kinoy) |
| 73. "Pictures Don't Lie" | October 24 | Katherine MacLean (adapted by Ernest Kinoy) |
| 74. "Sam, this Is You" | October 31 | Murray Leinster (adapted by Ernest Kinoy) |
| 75. "Appointment in Tomorrow" | November 7 | Fritz Leiber (adapted by Ernest Kinoy) |
| 76. "The Martian Death March" (Repeat) | November 14 | Ernest Kinoy |
| 77. "Chain of Command" | November 21 | Steven Arr (adapted by George Lefferts) |
| 78. "The Castaways" (Repeat) | November 28 | Ernest Kinoy |
| 79. "There Will Come Soft Rains" & "Zero Hour" (Rebroadcast) | December 5 | Ray Bradbury (adapted by George Lefferts) |
| 80. "Hostess" | December 12 | Isaac Asimov (adapted by Ernest Kinoy) |
| 81. "The Reluctant Heroes" | December 19 | Frank M. Robinson (adapted by Ernest Kinoy) |
| 82. "Honeymoon in Hell" | December 26 | Fredric Brown (adapted by George Leferts) |
1957
edit| Title | Air Date | Author |
|---|---|---|
| 83. "The Moon Is Green" | January 2 | Fritz Leiber (adapted by George Lefferts) |
| 84. "A Saucer of Loneliness" | January 9 | Theodore Sturgeon (adapted by George Lefferts) |
| 85. "The Girls from Earth" | January 16 | Frank M. Robinson (adapted by George Lefferts) |
| 86. "Open Warfare" | January 23 | James E. Gunn (adapted by Ernest Kinoy) |
| 87. "Caretaker" | January 30 | James H. Schmitz (adapted by Ernest Kinoy) |
| 88. "Venus Is a Man's World" | February 6 | William Tenn (adapted by Arthur Small) |
| 89. "The Trap" | February 13 | Finn O'Donnevan (adapted by Ernest Kinoy) |
| 90. "Field Study" | February 20 | Peter Phillips (adapted by Jack C. Wilson) |
| 91. "Real Gone" | February 27 | Ernest Kinoy (based on an idea by Al "Jazzbo" Collins) |
| 92. "The Seventh Victim" | March 6 | Robert Sheckley (adapted by Ernest Kinoy) |
| 93. "The Lights on Precipice Peak" | March 13 | Stephen Tall (adapted by Ernest Kinoy) |
| 94. "Protection" | March 20 | Robert Sheckley (adapted by Ernest Kinoy) |
| 95. "At the Post" | March 27 | H. L. Gold (adapted by Ernest Kinoy) |
| 96. "Martian Sam" | April 3 | Ernest Kinoy |
| 97. "Something for Nothing" | April 10 | Robert Sheckley (adapted by Ernest Kinoy) |
| 98. "The Discovery of Morniel Mathaway" | April 17 | William Tenn (adapted by Ernest Kinoy) |
| 99. "Man's Best Friend" | April 24 | Evelyn Smith (adapted by Ernest Kinoy) |
| 100. "Inside Story" | June 20 | Richard Wilson (adapted by Ernest Kinoy) |
| 101. "The Category Inventor" | June 27 | Arthur Sellings (adapted by Ernest Kinoy) |
| 102. "Skulking Permit" (Rebroadcast) | July 4 | Robert Sheckley (adapted by Ernest Kinoy) |
| 103. "Early Model" | July 11 | Robert Sheckley (adapted by Ernest Kinoy) |
| 104. "The Merchant of Venus" | July 18 | A. H. Phelps Jr. (adapted by Ernest Kinoy) |
| 105. "The Haunted Corpse" | July 25 | Frederik Pohl (adapted by William Welch) |
| 106. "End as a World" | August 1 | F. L. Wallace (adapted by Ernest Kinoy) |
| 107. "The Scapegoat" | August 8 | Richard Maples (adapted by Ernest Kinoy) |
| 108. "At the Post" (Repeat) | August 15 | H. L. Gold (adapted by Ernest Kinoy) |
| 109. "Drop Dead" | August 22 | Clifford D. Simak (adapted by Ernest Kinoy) |
| 110. "Volpla" | August 29 | Wyman Guin (adapted by Ernest Kinoy) |
| 111. "Saucer of Loneliness" (Repeat) | September 5 | Theodore Sturgeon (adapted by George Lefferts) |
| 112. "The Old Die Rich" (Rebroadcast) | September 12 | H. L. Gold (adapted by Ernest Kinoy) |
| 113. "Tsylana" | September 19 | James E. Gunn (adapted by George Lefferts) |
| 114. "The Native Problem" | September 26 | Robert Sheckley (adapted by William Welch) |
| 115. "A Wind Is Rising" | October 3 | Finn O'Donnevan (adapted by George Lefferts) |
| 116. "Death Wish" | October 10 | Ned Lang (adapted by William Welch) |
| 117. "Point of Departure" | October 17 | Vaughn Shelton (adapted by Ernest Kinoy) |
| 118. "The Light" | October 24 | Poul Anderson (adapted by William Welch) |
| 119. "Lulu" | October 31 | Clifford D. Simak (adapted by George Lefferts) |
| 120. "The Coffin Cure" | November 21 | Alan E. Nourse (adapted by Ernest Kinoy) |
| 121. "Shocktroop" | November 28 | Daniel F. Galouye (adapted by George Lefferts) |
| 122. "The Haunted Corpse" (Rebroadcast) | December 12 | Frederik Pohl (adapted by William Welch) |
| 123. "Double Dare" | December 19 | Robert Silverberg (adapted by William Welch) |
| 124. "Target One" | December 26 | Frederik Pohl (adapted by George Lefferts) |
1958
edit| Title | Air Date | Author |
|---|---|---|
| 125. "Prime Difference" | January 2 | Alan E. Nourse (adapted by George Lefferts) |
| 126. "Gray Flannel Armor" | January 9 | Finn O'Donnevan (adapted by William Welch) |
1973
edit| Title | Air Date | Author |
|---|---|---|
| 127. "The Iron Chancellor" | January 27 | Robert Silverberg |