Synopsis
This season was a season of major changes for Doctor Who, including some that have influenced the series and franchise ever since. Most notably, season 4 saw William Hartnell's First Doctor hand off the baton to Patrick Troughton's Second Doctor in the very first regeneration. When Hartnell announced his plans to leave the series, the show's writers came up with the idea of having the Doctor change his appearance and personality. In 1966, while it was not uncommon for actors to change in ongoing TV and film roles, this was possibly the first time a change in appearance was written into the very nature of the character.
Season 4 aired between 10 Sep 1966 and 01 Jul 1967, 43 episodes.
Episodes
E01
The Smugglers (1)
10 Sep 1966
E02
The Smugglers (2)
17 Sep 1966
E03
The Smugglers (3)
24 Sep 1966
E04
The Smugglers (4)
01 Oct 1966
E05
The Tenth Planet (1)
08 Oct 1966
E06
The Tenth Planet (2)
15 Oct 1966
E07
The Tenth Planet (3)
22 Oct 1966
E08
The Tenth Planet (4)
29 Oct 1966
E09
The Power of the Daleks (1)
05 Nov 1966
E10
The Power of the Daleks (2)
12 Nov 1966
E11
The Power of the Daleks (3)
19 Nov 1966
E12
The Power of the Daleks (4)
26 Nov 1966
E13
The Power of the Daleks (5)
03 Dec 1966
E14
The Power of the Daleks (6)
10 Dec 1966
E15
The Highlanders (1)
17 Dec 1966
E16
The Highlanders (2)
24 Dec 1966
E17
The Highlanders (3)
31 Dec 1966
E18
The Highlanders (4)
07 Jan 1967
E19
The Underwater Menace (1)
14 Jan 1967
E20
The Underwater Menace (2)
21 Jan 1967
E21
The Underwater Menace (3)
28 Jan 1967
E22
The Underwater Menace (4)
04 Feb 1967
E23
The Moonbase (1)
11 Feb 1967
E24
The Moonbase (2)
18 Feb 1967
E25
The Moonbase (3)
25 Feb 1967
E26
The Moonbase (4)
04 Mar 1967
E27
The Macra Terror (1)
11 Mar 1967
E28
The Macra Terror (2)
18 Mar 1967
E29
The Macra Terror (3)
25 Mar 1967
E30
The Macra Terror (4)
01 Apr 1967
E31
The Faceless Ones (1)
08 Apr 1967
E32
The Faceless Ones (2)
15 Apr 1967
E33
The Faceless Ones (3)
22 Apr 1967
E34
The Faceless Ones (4)
29 Apr 1967
E35
The Faceless Ones (5)
06 May 1967
E36
The Faceless Ones (6)
13 May 1967
E37
The Evil of the Daleks (1)
20 May 1967
E38
The Evil of the Daleks (2)
27 May 1967
E39
The Evil of the Daleks (3)
03 Jun 1967
E40
The Evil of the Daleks (4)
10 Jun 1967
E41
The Evil of the Daleks (5)
17 Jun 1967
E42
The Evil of the Daleks (6)
24 Jun 1967
E43
The Evil of the Daleks (7)
01 Jul 1967