A team of scientists search for the origin and purpose of a mysterious capsule found on a building site.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | The Halfmen | 1958-12-22 | 30 min |
| Season 1 | Episode 2 | The Ghosts | 1958-12-29 | 30 min |
| Season 1 | Episode 3 | Imp & Demons | 1959-01-05 | 30 min |
| Season 1 | Episode 4 | The Enchanted | 1959-01-12 | 30 min |
| Season 1 | Episode 5 | The Wild Hunt | 1959-01-19 | 30 min |
| Season 1 | Episode 6 | Hob | 1959-01-26 | 30 min |
| Editing | Ian Callaway | Editor |
| Crew | Jack Kine | Special Effects |
| Crew | Bernard Wilkie | Special Effects |
| Production | Rudolph Cartier | Producer |
| Writing | Nigel Kneale | Writer |
