The Doctor, Sarah and Harry return to Nerva, but at an earlier point in time. The crew are dying from a space plague but the Doctor suspects a survivor may be responsible.
- Drama
- Year 1975
- 24 min
Tom Baker begins his seven glorious years in the role by battling a homegrown robotic menace, before whisking his companions first to mankind’s far future, and then the Daleks’ past.
- Year: 1974
