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 Centauri, Aggedor and the Silurians' aquatic cousins the Sea Devils.
Episodes

E01 Day of the Daleks (1)
★ 6.4Jan 1, 1972 · 25m
When someone tries to assassinate diplomat Sir Reginald Styles, UNIT investigate the possibility his attacker came from the future.

E02 Day of the Daleks (2)
★ 6.2Jan 8, 1972 · 25m
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.

E03 Day of the Daleks (3)
★ 6.1Jan 15, 1972 · 25m
The Doctor forces the guerrillas to take him to the 22nd century where he is soon captured by the Controller.

E04 Day of the Daleks (4)
★ 6.5Jan 22, 1972 · 25m
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.

E05 The Curse of Peladon (1)
★ 6.4Jan 29, 1972 · 25m
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.

E06 The Curse of Peladon (2)
★ 6.3Feb 5, 1972 · 25m
The Doctor is convinced the Ice Warriors are trying to sabotage the conference but his attempts to prove it see him accused of sacrilege.

E07 The Curse of Peladon (3)
★ 6.3Feb 12, 1972 · 25m
The Doctor is sentenced to fight Grun to the death and his attempt to escape leads to an encounter with Aggedor.

E08 The Curse of Peladon (4)
★ 6.8Feb 19, 1972 · 25m
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.

E09 The Sea Devils (1)
★ 7.3Feb 26, 1972 · 25m
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.

E10 The Sea Devils (2)
★ 7.5Mar 4, 1972 · 25m
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.

E11 The Sea Devils (3)
★ 7.4Mar 11, 1972 · 25m
The Doctor is held prisoner by Trenchard while the Master attempts to contact the Sea Devils.

E12 The Sea Devils (4)
★ 6.9Mar 18, 1972 · 25m
The Sea Devils attack the island prison and rescue the Master, prompting the Doctor to venture underwater to try and contact them.

E13 The Sea Devils (5)
★ 7.0Mar 25, 1972 · 25m
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.

E14 The Sea Devils (6)
★ 7.1Apr 1, 1972 · 25m
The Sea Devils take over the naval base and the Doctor is forced to help the Master find a way to revive their colony.

E15 The Mutants (1)
★ 6.2Apr 8, 1972 · 25m
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...

E16 The Mutants (2)
★ 6.1Apr 15, 1972 · 25m
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.

E17 The Mutants (3)
★ 6.0Apr 22, 1972 · 25m
The Doctor and Varan travel down to Solos to search for Jo and Ky but the Marshal orders his men to pursue them.

E18 The Mutants (4)
★ 6.0Apr 29, 1972 · 25m
The Doctor and his friends are led to safety by Professor Sondergaard, who tries to help the Doctor translate the tablets.

E19 The Mutants (5)
★ 5.7May 6, 1972 · 25m
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.

E20 The Mutants (6)
★ 6.1May 13, 1972 · 25m
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.

E21 The Time Monster (1)
★ 6.1May 20, 1972 · 25m
UNIT are invited to observe a demonstration of the new TOMTIT machine, unaware its creator, Professor Thascales, is actually the Master.

E22 The Time Monster (2)
★ 6.3May 27, 1972 · 25m
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.

E23 The Time Monster (3)
★ 6.3Jun 3, 1972 · 25m
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.

E24 The Time Monster (4)
★ 6.9Jun 10, 1972 · 25m
The Master prepares to travel back to Atlantis but the Doctor links his TARDIS to the Master's to try and stop him.

E25 The Time Monster (5)
★ 6.4Jun 17, 1972 · 25m
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.

E26 The Time Monster (6)
★ 5.4Jun 24, 1972 · 25m
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.
Other Seasons
EPS42Season 11963
EPS39Season 21964
EPS45Season 31965
EPS43Season 41966
EPS40Season 51967
EPS44Season 61968
EPS25Season 71970
EPS25Season 81971
EPS26Season 101972
EPS26Season 111973
EPS20Season 121974
EPS26Season 131975
EPS26Season 141976
EPS26Season 151977
EPS26The Key to Time1978
EPS20Season 171979
EPS28Season 181980
EPS26Season 191982
EPS22Season 201983
EPS24Season 211984
EPS13Season 221985
EPS14The Trial of a Time Lord1986
EPS14Season 241987
EPS14Season 251988
EPS14Season 261989