The two individual episode titles are:
- The Powerful Enemy
- Desperate Measures
- This is the first of four two part stories (in 25 min format) in classic Doctor Who. The others are The Sontaran Experiment (1975), Black Orchid (1982), and The Awakening (1984).
- This story marks the first story for Maureen O’Brien as Vicki – the new permanent companion. The DVD is sold in a set with the following story, “The Romans”.
#DoctorWhoMarathon Ep 52 - "The Powerful Enemy" (1/2 - Serial L, Story 11) - 2 Jan 1965. #DoctorWho— jᎾᎬ sᎥᎬᎶᏞᎬᏒ (@JoeSiegler) October 9, 2021
A short 2 parter that exists to introduce the new companion, Vicki. The Doctor is overly sad and tired this ep about Susan. Everyone is threatened by a native called Koquillion. pic.twitter.com/6uer5l5Jsk
#DoctorWhoMarathon Ep 53 - "Desperate Measures" (2/2 - Serial L, Story 11) - 9 Jan 1965. #DoctorWho— jᎾᎬ sᎥᎬᎶᏞᎬᏒ (@JoeSiegler) October 9, 2021
Koquillion is found out to be Bennett, who killed the members of his crashed ship. He used Vicki to hide this. He was killed by natives of planet. Vicki goes with the Tardis crew. pic.twitter.com/6glYP9DVl5