• Air date: 10 Sep '66 43 episodes
      The fourth season of British science fiction television series Doctor Who began on 10 September 1966 with the 1st Doctor story The Smugglers and, after a change of lead actor part-way through the series, ended on 1 July 1967 with The Evil of the Daleks. For the first time, the entire main cast changed over the course of a single season.
  • List of Episodes (43)
    • 26. The Moonbase, Episode Four

      04 Mar '67
      With the Cybermen preparing to launch a full attack, the Doctor and his friends must keep the Moonbase and the Gravitron out of their hands until help arrives from Earth.
    • 27. The Macra Terror, Episode One

      11 Mar '67
      The TARDIS arrives at a holiday camp company with the crew worried by a prediction of giant crabs and the Doctor becomes interested in the apparent madman Medok's stories of creatures that roam the colony at night.
    • 28. The Macra Terror, Episode Two

      18 Mar '67
      The Doctor is unable to convince the colonists that the Macra exist and an attempt to brainwash his companions results in Ben betraying his friends.
    • 29. The Macra Terror, Episode Three

      24 Mar '67
      The Doctor, Polly and Jamie are sentenced to work in the pits and an escape attempt sees Ben's loyalties called into question again.
    • 30. The Macra Terror, Episode Four

      01 Apr '67
      The Doctor and Polly manage to save Jamie from the Macra and then try to show the Pilot who is really in charge of the colony.
    • 31. The Faceless Ones, Episode One

      08 Apr '67
      The TARDIS materialises on the runway of Gatwick Airport, where Polly witnesses a murder only to be kidnapped before she can report it.
    • 32. The Faceless Ones, Episode Two

      15 Apr '67
      With Polly having apparently forgotten them, the Doctor, Ben and Jamie decide to carry out their own investigation of Chameleon Tours.
    • 33. The Faceless Ones, Episode Three

      22 Apr '67
      The Doctor, Jamie and Sam manage to convince Crossland to trust them and he persuades the Commandant to let them continue their investigation.
    • 34. The Faceless Ones, Episode Four

      29 Apr '67
      When Spencer attempts to kill them, the Doctor, Jamie and Sam become convinced Chameleon Tours are hiding something and Sam decides to book a ticket on one of their flights.
    • 35. The Faceless Ones, Episode Five

      06 May '67
      Jamie finds himself aboard the Chameleons' satellite and meets their Director while the Doctor forces the Chameleon Meadows to tell him the aliens' plans.
    • 36. The Faceless Ones, Episode Six

      13 May '67
      The Doctor and Pinto are captured by the Chameleons but the Doctor manages to use their dependence on their human originals to create dissent in their ranks.
    • 37. The Evil of the Daleks: Episode 1

      20 May '67
      Trying to find the stolen TARDIS, the Second Doctor and Jamie are lured into a trap by the Doctor's old enemies the Daleks.
    • 38. The Evil of the Daleks, Episode Two

      27 May '67
      The Doctor and Jamie investigate Waterfield's antiques shop, where they are knocked unconscious and transported back to the 19th century.
    • 39. The Evil of the Daleks, Episode Three

      03 Jun '67
      As part of the Daleks' experiment, the Doctor manipulates Jamie into attempting to rescue Victoria.
    • 40. The Evil of the Daleks, Episode Four

      10 Jun '67
      Jamie and Kemel team up to try and find Victoria, while the Doctor and the Daleks continue to monitor their progress.
    • 41. The Evil of the Daleks, Episode Five

      17 Jun '67
      With the experiment at an end, the Doctor begins to suspect the key to rescuing Jamie, Victoria and Kemel from the Daleks lies with Terrall.
    • 42. The Evil of the Daleks, Episode Six

      24 Jun '67
      The Doctor, Jamie and Waterfield follow the Daleks to Skaro, where they discover an unforeseen consequence to their experiment.
    • 43. The Evil of the Daleks, Episode Seven

      01 Jul '67
      The Daleks are poised to spread the Dalek Factor throughout the history of Earth and begin by implanting the Doctor.