Doctor Who (season 13)

Doctor Who (season 13)
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Starring	Tom Baker Elisabeth Sladen Ian Marter
Country of origin	United Kingdom
No. of episodes	26 6 stories
Release
Original network	BBC One
Original release	30 August 1975 (1975-08-30) – 6 March 1976 (1976-03-06)

The thirteenth season of British science fiction television series Doctor Who began on 30 August 1975 with the story Terror of the Zygons, and ended with The Seeds of Doom.

Casting

See also: List of Doctor Who cast members

Main cast

• Tom Baker as the Fourth Doctor
• Elisabeth Sladen as Sarah Jane Smith
• Ian Marter as Harry Sullivan

Tom Baker continued his role as The Fourth Doctor along with Sarah Jane Smith (Elisabeth Sladen). Harry Sullivan, played by Ian Marter, departed in Terror of the Zygons and reappeared in The Android Invasion as a guest star.

Recurring cast

• Nicholas Courtney as Brigadier Lethbridge-Stewart
• John Levene as Sergeant Benton

Nicholas Courtney returned as Brigadier Lethbridge-Stewart in Terror of the Zygons having last appeared in Robot. John Levene makes his final appearance as Sergeant Benton in The Android Invasion after six years in the role.

Serials

Terror of the Zygons was produced as part of the production schedule for Season 12, but was held for transmission from the end of that season to the beginning of Season 13, to coincide with a move from the new season starting at the beginning of the calendar year, to starting in late summer. Terror of the Zygons was also the last appearance of the Brigadier until Mawdryn Undead in Season 20. The season took a transmission break of two weeks over the Christmas 1975 period, between the broadcasts of The Android Invasion and The Brain of Morbius.

Story	Serial	Title	Directed by	Written by	Original air date	Prod. code	UK viewers (millions)	AI
80	1	Terror of the Zygons	Douglas Camfield	Robert Banks Stewart	30 August 1975 6 September 1975 13 September 1975 20 September 1975	4F	8.4 6.1 8.2 7.2	59 — 54 —
The Fourth Doctor is summoned to Earth by the Brigadier who is in Scotland investigating the mysterious loss of oilrigs.
81	2	Planet of Evil	David Maloney	Louis Marks	27 September 1975 4 October 1975 11 October 1975 18 October 1975	4H	10.4 9.9 9.1 10.1	— 56 57 54
An expedition is murdered. The Doctor lands on the planet at the same time as the expedition's rescue team, and is immediately taken prisoner as the suspected murderer.
82	3	Pyramids of Mars	Paddy Russell	Stephen Harris (Lewis Greifer and Robert Holmes)	25 October 1975 1 November 1975 8 November 1975 15 November 1975	4G	10.5 11.3 9.4 11.7	— — — 60
The TARDIS materialises inside a mansion in 1911, where cloth-wrapped mummies roam the grounds killing anyone in their path.
83	4	The Android Invasion	Barry Letts	Terry Nation	22 November 1975 29 November 1975 6 December 1975 13 December 1975	4J	11.9 11.3 12.1 11.4	58 — — —
The Doctor and Sarah find themselves in the English village of Devesham. But the village seems deserted, except for mysterious space-suited figures and their own doppelgangers.
84	5	The Brain of Morbius	Christopher Barry	Robin Bland (Terrance Dicks and Robert Holmes)	3 January 1976 10 January 1976 17 January 1976 24 January 1976	4K	9.5 9.3 10.1 10.2	— — 57 —
Years ago, the renegade Time Lord known as Morbius was executed. When the Fourth Doctor and Sarah arrive on the planet Karn, they discover that Dr Solon is creating a body so that Morbius may live again.
85	6	The Seeds of Doom	Douglas Camfield	Robert Banks Stewart	31 January 1976 7 February 1976 14 February 1976 21 February 1976 28 February 1976 6 March 1976	4L	11.4 11.4 10.3 11.1 9.9 11.5	59 — — — — —
Arctic explorers uncover two giant seedpods from another time and place. Ruthless plant-lover Harrison Chase decides he must have them for his rare collection, but the pods may spell the end of all non-plant life on Earth.

Broadcast

The entire season was broadcast from 30 August 1975 to 6 March 1976.

DVD releases

See also: List of Doctor Who home video releases

The stories have been released on DVD individually since 2004.

Serial name	Number and duration of episodes	R2 release date	R4 release date	R1 release date
Terror of the Zygons	4 × 25 min.	30 September 2013	2 October 2013	8 October 2013
Planet of Evil	4 × 25 min.	15 October 2007	5 December 2007	4 March 2008
Pyramids of Mars	4 × 25 min.	1 March 2004	10 June 2004	7 September 2004
The Android Invasion Only available as part of the U.N.I.T. Files box set in Regions 2 and 4. Only available individually in Region 1.	4 × 25 min.	9 January 2012	5 January 2012	10 January 2012
The Brain of Morbius	4 × 25 min.	21 July 2008	2 October 2008	7 October 2008
The Seeds of Doom	6 × 25 min.	25 October 2010	2 December 2010	8 March 2011

In print

Main article: List of Doctor Who novelisations

Serial name	Novelisation title	Author	First published
Terror of the Zygons	Doctor Who and the Loch Ness Monster	Terrance Dicks	1976
Planet of Evil	Doctor Who and the Planet of Evil	Terrance Dicks	1977
Pyramids of Mars	Doctor Who and the Pyramids of Mars	Terrance Dicks	1976
The Android Invasion	Doctor Who and the Android Invasion	Terrance Dicks	1978
The Brain of Morbius	Doctor Who and the Brain of Morbius	Terrance Dicks	1977
The Seeds of Doom	Doctor Who and the Seeds of Doom	Philip Hinchcliffe	1977