Doctor Who: Season 9
It was noted for being the beginning of the end of the Doctor's exile on Earth, with the Doctor's TARDIS still under the control of the Time Lords (The Mutants) and restricted freedom (The Curse of Peladon and The Time Monster), as well as UNIT and the Master appearing less frequently in compared to the previous two series. As well as the return of the Daleks and the Ice Warriors, this series also introduced Alpha Ce
Season 9 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Doctor Who Season 8.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Season overview
It was noted for being the beginning of the end of the Doctor's exile on Earth, with the Doctor's TARDIS still under the control of the Time Lords (The Mutants) and restricted freedom (The Curse of Peladon and The Time Monster), as well as UNIT and the Master appearing less frequently in compared to the previous two series. As well as the return of the Daleks and the Ice Warriors, this series also introduced Alpha Centauri, Aggedor and the Silurians' aquatic cousins the Sea Devils.
Episode Guide
Season 9 Progress Shield
Day of the Daleks (1)
Jan 1, 1972 · 25 min
When someone tries to assassinate diplomat Sir Reginald Styles, UNIT investigate the possibility his attacker came from the future.
Day of the Daleks (2)
Jan 8, 1972 · 25 min
Jo uses the guerrillas' time machine to travel to the 22nd century where the Controller tricks her into telling the Daleks where she's come from.
Day of the Daleks (3)
Jan 15, 1972 · 25 min
The Doctor forces the guerrillas to take him to the 22nd century where he is soon captured by the Controller.
Day of the Daleks (4)
Jan 22, 1972 · 25 min
The guerrillas infiltrate the Daleks' base to rescue the Doctor and Jo and ask them to return to their own time and alter history before the 20th century is plunged into a Third Wo
The Curse of Peladon (1)
Jan 29, 1972 · 25 min
The Doctor and Jo arrive on the medieval planet Peladon, where the Doctor is mistaken for the Earth Delegate of the Galactic Federation and Jo is mistaken for a princess.
The Curse of Peladon (2)
Feb 5, 1972 · 25 min
The Doctor is convinced the Ice Warriors are trying to sabotage the conference but his attempts to prove it see him accused of sacrilege.
The Curse of Peladon (3)
Feb 12, 1972 · 25 min
The Doctor is sentenced to fight Grun to the death and his attempt to escape leads to an encounter with Aggedor.
The Curse of Peladon (4)
Feb 19, 1972 · 25 min
Hepesh's plan has been exposed but he is still determined to prevent Peladon joining the Galactic Federation by leading a rebellion against the King.
The Sea Devils (1)
Feb 26, 1972 · 25 min
The Doctor and Jo visit the Master at his island prison where the Doctor becomes curious about a number of ships sinking in the area.
The Sea Devils (2)
Mar 4, 1972 · 25 min
The Doctor and Jo are trapped on the fort by a Sea Devil while the Master convinces Trenchard to help him steal some electronic components.
The Sea Devils (3)
Mar 11, 1972 · 25 min
The Doctor is held prisoner by Trenchard while the Master attempts to contact the Sea Devils.
The Sea Devils (4)
Mar 18, 1972 · 25 min
The Sea Devils attack the island prison and rescue the Master, prompting the Doctor to venture underwater to try and contact them.
The Sea Devils (5)
Mar 25, 1972 · 25 min
The Doctor is taken to the Sea Devils' underwater colony where he tries to make peace with the creatures, only for the navy to attack the base.
The Sea Devils (6)
Apr 1, 1972 · 25 min
The Sea Devils take over the naval base and the Doctor is forced to help the Master find a way to revive their colony.
The Mutants (1)
Apr 8, 1972 · 25 min
The Doctor and Jo arrive on the planet Solos, on a assignment by the Time Lords, where they learn that the native Solonians are mutating into ant-like mutant creatures...
The Mutants (2)
Apr 15, 1972 · 25 min
Ky transports himself and Jo down to Solos and the Marshal only agrees to help her if the Doctor assists Professor Jaeger in altering Solos' atmosphere.
The Mutants (3)
Apr 22, 1972 · 25 min
The Doctor and Varan travel down to Solos to search for Jo and Ky but the Marshal orders his men to pursue them.
The Mutants (4)
Apr 29, 1972 · 25 min
The Doctor and his friends are led to safety by Professor Sondergaard, who tries to help the Doctor translate the tablets.
The Mutants (5)
May 6, 1972 · 25 min
The Marshal's premature use of Jaeger's experiment is threatening to destroy Solos' atmosphere and the Doctor returns to Skybase to try and correct the damage.
The Mutants (6)
May 13, 1972 · 25 min
The Doctor is forced to help the Marshal cover up his actions with the Investigator but Jo and the others attempt to escape to expose him.
The Time Monster (1)
May 20, 1972 · 25 min
UNIT are invited to observe a demonstration of the new TOMTIT machine, unaware its creator, Professor Thascales, is actually the Master.
The Time Monster (2)
May 27, 1972 · 25 min
The Doctor realises the Master is trying to harness the power of Kronos, last of the Chronovores, but is unaware Percival is harbouring him at the institute.
The Time Monster (3)
Jun 3, 1972 · 25 min
The Master enlists the help of Krasis to control Kronos while Yates tries to bring the TARDIS to the institute only to come under attack from dangers from the past.
The Time Monster (4)
Jun 10, 1972 · 25 min
The Master prepares to travel back to Atlantis but the Doctor links his TARDIS to the Master's to try and stop him.
The Time Monster (5)
Jun 17, 1972 · 25 min
Both TARDISes reach Atlantis, where the Doctor befriends King Dalios while the Master enlists the help of Queen Galleia to try and obtain the crystal of Kronos.
The Time Monster (6)
Jun 24, 1972 · 25 min
The Doctor enters the labyrinth to try and protect Jo from the minotaur but the Master has seized control of Atlantis and prepares to summon Kronos again.