S1 E1
The Doctor realises signals coming from a probe are of extra-terrestrial origin.
The Doctor realises signals coming from a probe are of extra-terrestrial origin.
The Doctor and Liz try to decode a signal.
The Doctor realises the astronauts have been kidnapped.
The Doctor begins to suspect Taltalian is more involved than he appeared.
The Doctor takes Recovery 7 back into space to search for the missing astronauts.
The Doctor speaks with the alien captain and is kidnapped by Reegan.
The Brigadier must rescue the Doctor and Liz.