Seasons & episodes
S1 · E25Sentence of Death 1964-05-09 · 26 min
The group are reunited with the Doctor in the city of Millennius where Ian faces trial for murder after the fourth key is stolen.
S1 · E26The Keys of Marinus 1964-05-16 · 26 min
The Doctor and his friends must locate the real murderers and the fourth key before heading off for a final confrontation with the Voord
S1 · E27The Temple of Evil 1964-05-23 · 24 min
The TARDIS arrives on Earth landing in 16th century Aztec society. Barbara goes off exploring - despite the Doctor's orders not to wander off - and is taken away by the high priest Autloc who believes she is the reincarnation of the goddess Yetaxa. They believe it is a sign that the rains - which are late - will now come. The high priest of sacrifice Tlotoxl recruits Ian to lead their army but he finds he has a rival in Ixta. Ian is less than comfortable with his role when he learns that they are to deliver the human sacrifice to the high priest at the rain ceremony. The Doctor emphasizes that they must not interfere with Aztec rituals, something that does not sit well with Barbara.
S1 · E28The Warriors of Death 1964-05-30 · 25 min
Barbara tries to change the course of history - and Ian fights for his life.
S1 · E29The Bride of Sacrifice 1964-06-06 · 26 min
While the Doctor tries to find a way back to the TARDIS, Tlotoxl continues to plot Barbara's downfall and sees an opening when Susan questions Aztec custom.
S1 · E30The Day of Darkness 1964-06-13 · 26 min
Tlotoxl's machinations result in both Susan and Ian being arrested. With the TARDIS once again trapped inside the tomb, the travellers' only hope for escape lies with Autloc and Cameca.
S1 · E31Strangers in Space 1964-06-20 · 25 min
The 28th century. The TARDIS materialises on a spaceship orbiting a planet known as the Sense-Sphere, whose natives, the Sensorites, have trapped the ship's human crew in a state of paralysis.
S1 · E32The Unwilling Warriors 1964-06-27 · 25 min
The Doctor and his companions are on board an Earth ship trapped in orbit around the Sense-Sphere when it is boarded by the Sensorites, who steal the lock mechanism from the TARDIS.
S1 · E33Hidden Danger 1964-07-11 · 25 min
The Doctor and his companions are escorted to the Sense-Sphere where they attempt to negotiate with the Sensorites for the release of the TARDIS.
S1 · E34A Race Against Death 1964-07-18 · 25 min
With Ian having fallen victim to the Sensorites' plague, the Doctor is desperate to find a cure. But the City Administrator is still determined to rid his world of aliens.
S1 · E35Kidnap 1964-07-25 · 26 min
The City Administrator is determined to destroy the Doctor and his friends and his paranoia prevents the Doctor's cure from being distributed.
S1 · E36A Desperate Venture 1964-08-01 · 25 min
While the City Administrator's schemes reach their climax, the Doctor and Ian venture into the tunnels under the city to discover the real cause of the Sensorite plague.
S1 · E37A Land of Fear 1964-08-08 · 25 min
The TARDIS lands during the French Revolution, where Ian, Barbara, and Susan become caught up in the politics of the day. When they are arrested and set to be executed, the Doctor must take on the disguise of a public official to try and save their lives.
S1 · E38Guests of Madame Guillotine 1964-08-15 · 25 min
Susan, Ian and Barbara are sentenced to be guillotined but an encounter with a dying English prisoner may offer Ian a chance of survival.
S1 · E39A Change of Identity 1964-08-22 · 26 min
Susan and Barbara are rescued by Jules and Jean, two members of the escape chain, while the Doctor gains access to the prison by posing as a revolution official.
S1 · E40The Tyrant of France 1964-08-29 · 25 min
The Doctor is forced into a meeting with Robespierre while Barbara's attempts to find a physician for Susan result in them being betrayed.
S1 · E41A Bargain of Necessity 1964-09-05 · 24 min
Ian finds himself held prisoner by the treacherous Leon while the Doctor attempts to engineer Susan and Barbara's escape.
S1 · E42Prisoners of Conciergerie 1964-09-12 · 26 min
Ian finally delivers his message to James Stirling but in order to secure Susan's release he and Barbara are forced into a dangerous spying mission.