Classic Doctor Who: The First Doctor

Season 1 Episode 10 - The Keys of Marinus: The Sea of Death

Season 1

• Season 1
• Season 2
• Season 3

S01:E01 - The Daleks: The Dead Planet

The travellers venture out on to the surface of a new world.

S01:E02 - The Daleks: The Survivors

The Doctor, Ian and Susan discover that they have exposed to radiation.

S01:E03 - The Daleks: The Escape

Fearful of a Thal attack, the Daleks force Susan to trick the Thals.

S01:E04 - The Daleks: The Ambush

Pretending to be a Dalek, Ian finds that that he is trapped inside the casing.

S01:E05 - The Daleks: The Expedition

Ian and Barbara join a Thal expedition that will penetrate the Dalek city.

S01:E06 - The Daleks: The Ordeal

The Doctor and Susan are once again taken prisoner by the Daleks.

S01:E07 - The Daleks: The Rescue

The Thals and the time travellers attack the Daleks.

S01:E08 - The Edge of Destruction

The Doctor and his crew begin to act strangely after a mysterious explosion on the TARDIS.

S01:E09 - The Brink of Disaster

The time travellers are in grave danger as the TARDIS nears total disintegration.

S01:E10 - The Keys of Marinus: The Sea of Death

The TARDIS lands on a remote island, surrounded by a sea of acid and are set a task.

S01:E11 - The Keys of Marinus: The Velvet Web

In the city of Morphoton, the Doctor, Barbara, Ian and Susan are welcomed as guests.

S01:E12 - The Keys of Marinus: The Screaming Jungle

Ian and Barbara find a temple in the jungle. Inside is Darrius, keeper of one of the keys.

S01:E13 - The Keys of Marinus: The Snows of Terror

In a snowy wasteland, Vasor, an unscrupulous trapper, imprisons the travellers.

S01:E14 - The Keys of Marinus: Sentence of Death

Arriving in Millennius, Ian is put on trial for murder. The Doctor takes his case.

S01:E15 - The Keys of Marinus: The Keys of Marinus

The Doctor solves the murder mystery and finds the final missing key.

S01:E16 - The Aztecs: The Temple of Evil

When Barbara meets the Aztecs they mistake her for a reincarnation of the High Priest.

S01:E17 - The Aztecs: The Warriors of Death

Barbara's interference in Aztec traditions cast doubt over her supposed divinity.

S01:E18 - The Aztecs: The Bride of Sacrifice

Barbara's divine powers are challenged and she humiliates Tlotoxl.

S01:E19 - The Aztecs: The Day of Darkness

Can the Doctor and his companions escape before they are sacrificed to the Sun God?

S01:E20 - The Sensorites: Strangers in Space

The crew onboard a spaceship have been trapped in a state of permanent paralysis.

S01:E21 - The Sensorites: The Unwilling Warriors

Communicating through Susan using telepathic powers, the Sensorites contact the Doctor.

S01:E22 - The Sensorites: Hidden Danger

The Doctor and his companions uncover a shattering truth on the Sense-Sphere.

S01:E23 - The Sensorites: A Race Against Death

Convinced that Ian has actually been poisoned, the Doctor decides to investigate.

S01:E24 - The Sensorites: Kidnap

Carol puts herself in danger when she attempts to find the Doctor at the aqueduct.

S01:E25 - The Sensorites: A Desperate Venture

The Doctor and Ian discover the identity of the strange creatures that poisoned the water.