| Clue | Source | Date |
|---|---|---|
| Utmost extremes, and a theme hint | Universal | 06 Jan 2025 |
| Sci-fi series of the '60s (with "The") | USA Today | 15 Jul 2015 |
| Old sci-fi TV series (with "The") | Universal | 01 Apr 2015 |
| Old sci-fi TV series (with "The") | ||
| Sci-fi series of the '60s (with "The") |