Ian and Vrestin are captured by the subterranean Optera while Barbara and her Menoptera allies attempt to escape from the slave camp.
| Title | Crater of Needles |
|---|---|
| Genres | Drama Action & Adventure Sci-Fi & Fantasy |
| Release Date | 1965-03-06 |
| Episode Runtime | 00 Hours 25 Minutes |
| Season Number | 2 |
| Episode Number | 19 |
| Production Companies | BBC |
