Where To Stream Doctor Who Season 12 Episode 5
The Ark in Space, Part One
- Aired January 25, 1975
- 25 Min
- Rated 8.9
- Number 282 Of 700 Rated Episodes
The Doctor's attempt to give Harry a trip in the TARDIS sees the two of them and Sarah arriving onboard space station Nerva in the far future, with some rather deadly security mechanisms.