1958
| Title | Air Date | Author |
|---|---|---|
| 125. "Prime Difference" | January 2, 1958 | Alan E. Nourse (adapted by George Lefferts) |
| 126. "Gray Flannel Armor" | January 9, 1958 | Finn O'Donnevan (adapted by William Welch) |
Read more about this topic: List Of X Minus One Episodes