第 9 季 共 26 集
播出时间：1972年1月2日
第 1 集 Day of the Daleks (1)
播出时间：1972年1月2日
When someone tries to assassinate diplomat Sir Reginald Styles, UNIT investigate the possibility his attacker came from the future.
第 2 集 Day of the Daleks (2)
播出时间：1972年1月9日
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.
第 3 集 Day of the Daleks (3)
播出时间：1972年1月16日
The Doctor forces the guerrillas to take him to the 22nd century where he is soon captured by the Controller.
第 4 集 Day of the Daleks (4)
播出时间：1972年1月23日
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 World War.
第 5 集 The Curse of Peladon (1)
播出时间：1972年1月30日
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. Where the Doctor uncovers a conspiracy, as he exposes the evil scheme of the high-priest Hepesh who bids to prevent King Peladon from joining the galactic Federation.
第 6 集 The Curse of Peladon (2)
播出时间：1972年2月6日
The Doctor is convinced the Ice Warriors are trying to sabotage the conference but his attempts to prove it see him accused of sacrilege.
第 7 集 The Curse of Peladon (3)
播出时间：1972年2月13日
The Doctor is sentenced to fight Grun to the death and his attempt to escape leads to an encounter with Aggedor.
第 8 集 The Curse of Peladon (4)
播出时间：1972年2月20日
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.
第 9 集 The Sea Devils (1)
播出时间：1972年2月27日
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.
第 10 集 The Sea Devils (2)
播出时间：1972年3月5日
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.
第 11 集 The Sea Devils (3)
播出时间：1972年3月12日
The Doctor is held prisoner by Trenchard while the Master attempts to contact the Sea Devils.
第 12 集 The Sea Devils (4)
播出时间：1972年3月19日
The Sea Devils attack the island prison and rescue the Master, prompting the Doctor to venture underwater to try and contact them.
第 13 集 The Sea Devils (5)
播出时间：1972年3月26日
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.
第 14 集 The Sea Devils (6)
播出时间：1972年4月2日
The Sea Devils take over the naval base and the Doctor is forced to help the Master find a way to revive their colony.
第 15 集 The Mutants (1)
播出时间：1972年4月9日
The Doctor and Jo arrive on the planet Solos, on a assignment by the Time Lords. Where the Doctor and Jo learn that the native Solonians are mutating into ant-like mutant creatures and they uncover a conspiracy, where the evil Marshal of the Earth Empire plots to rule Solos for himself and plans to convert Solos atmosphere, since the planet's atmosphere is poisonous, so the planet can be colonized by the humans and he plans to wipe out all the mutated Solonians, who are evolving into a advanced super race.
第 16 集 The Mutants (2)
播出时间：1972年4月16日
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.
第 17 集 The Mutants (3)
播出时间：1972年4月23日
The Doctor and Varan travel down to Solos to search for Jo and Ky but the Marshal orders his men to pursue them.
第 18 集 The Mutants (4)
播出时间：1972年4月30日
The Doctor and his friends are led to safety by Professor Sondergaard, who tries to help the Doctor translate the tablets.
第 19 集 The Mutants (5)
播出时间：1972年5月7日
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.
第 20 集 The Mutants (6)
播出时间：1972年5月14日
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.
第 21 集 The Time Monster (1)
播出时间：1972年5月21日
UNIT are invited to observe a demonstration of the new TOMTIT machine, unaware its creator, Professor Thascales, is actually the Master.
第 22 集 The Time Monster (2)
播出时间：1972年5月28日
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.
第 23 集 The Time Monster (3)
播出时间：1972年6月4日
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.
第 24 集 The Time Monster (4)
播出时间：1972年6月11日
The Master prepares to travel back to Atlantis but the Doctor links his TARDIS to the Master's to try and stop him.
第 25 集 The Time Monster (5)
播出时间：1972年6月18日
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.
第 26 集 The Time Monster (6)
播出时间：1972年6月25日
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.
