Doctor Who (season 13)

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.

Doctor Who
Season 13
Cover art of the Region 2 DVD release for the first serial of the season
Starring	Tom Baker Elisabeth Sladen Ian Marter
Country of origin	United Kingdom
No. of stories	6
No. of episodes	26
Release
Original network	BBC1
Original release	30 August 1975 – 6 March 1976
Season chronology

Casting

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	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) [1]	AI [1]
80	1	Terror of the Zygons	"Part One"	Douglas Camfield	Robert Banks Stewart	30 August 1975	4F	8.4	59
			"Part Two"	Douglas Camfield	Robert Banks Stewart	6 September 1975	4F	6.1	—
			"Part Three"	Douglas Camfield	Robert Banks Stewart	13 September 1975	4F	8.2	54
			"Part Four"	Douglas Camfield	Robert Banks Stewart	20 September 1975	4F	7.2	—
The Fourth Doctor is summoned to Earth by the Brigadier who is in Scotland investigating the mysterious loss of oil rigs, and discovers an alien invasion.
81	2	Planet of Evil	"Part One"	David Maloney	Louis Marks	27 September 1975	4H	10.4	—
			"Part Two"	David Maloney	Louis Marks	4 October 1975	4H	9.9	56
			"Part Three"	David Maloney	Louis Marks	11 October 1975	4H	9.1	57
			"Part Four"	David Maloney	Louis Marks	18 October 1975	4H	10.1	54
An expedition is murdered. The Doctor and Sarah Jane land on the planet at the same time as the expedition's rescue team, and are immediately taken prisoner as the suspected murderers.
82	3	Pyramids of Mars	"Part One"	Paddy Russell	Stephen Harris (Lewis Greifer and Robert Holmes)	25 October 1975	4G	10.5	—
			"Part Two"	Paddy Russell	Stephen Harris (Lewis Greifer and Robert Holmes)	1 November 1975	4G	11.3	—
			"Part Three"	Paddy Russell	Stephen Harris (Lewis Greifer and Robert Holmes)	8 November 1975	4G	9.4	—
			"Part Four"	Paddy Russell	Stephen Harris (Lewis Greifer and Robert Holmes)	15 November 1975	4G	11.7	60
The Osiran warmonger Sutekh seeks to be released from his prison and enlists servants on Earth.
83	4	The Android Invasion	"Part One"	Barry Letts	Terry Nation	22 November 1975	4J	11.9	58
			"Part Two"	Barry Letts	Terry Nation	29 November 1975	4J	11.3	—
			"Part Three"	Barry Letts	Terry Nation	6 December 1975	4J	12.1	—
			"Part Four"	Barry Letts	Terry Nation	13 December 1975	4J	11.4	—
The Doctor and Sarah Jane land in a duplicate of an English village, complete with androids created by aliens as a testing ground for their invasion plot.
84	5	The Brain of Morbius	"Part One"	Christopher Barry	Robin Bland (Terrance Dicks and Robert Holmes)	3 January 1976	4K	9.5	—
			"Part Two"	Christopher Barry	Robin Bland (Terrance Dicks and Robert Holmes)	10 January 1976	4K	9.3	—
			"Part Three"	Christopher Barry	Robin Bland (Terrance Dicks and Robert Holmes)	17 January 1976	4K	10.1	57
			"Part Four"	Christopher Barry	Robin Bland (Terrance Dicks and Robert Holmes)	24 January 1976	4K	10.2	—
Years ago, the renegade Time Lord known as Morbius was executed. When the Doctor and Sarah Jane 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	"Part One"	Douglas Camfield	Robert Banks Stewart	31 January 1976	4L	11.4	59
			"Part Two"	Douglas Camfield	Robert Banks Stewart	7 February 1976	4L	11.4	—
			"Part Three"	Douglas Camfield	Robert Banks Stewart	14 February 1976	4L	10.3	—
			"Part Four"	Douglas Camfield	Robert Banks Stewart	21 February 1976	4L	11.1	—
			"Part Five"	Douglas Camfield	Robert Banks Stewart	28 February 1976	4L	9.9	—
			"Part Six"	Douglas Camfield	Robert Banks Stewart	6 March 1976	4L	11.5	—
Scientists uncover two giant seedpods buried in the Antarctic permafrost for thousands of years. 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.

Home media

VHS releases

Season	Story no.	Serial name	Number and duration of episodes	R2 release date	R4 release date	R1 release date
13	080	Terror of the Zygons	1 x 100 min. 4 x 25 min.	November 1988(edited) August 1999(unedited)	April 1987(edited) January 2000 (unedited)	April 1991(edited) May 2000 (unedited)
	081	Planet of Evil	4 x 25 min.	February 1994	March 1994	June 1996
	082	Pyramids of Mars	1 x 100 min. 4 x 25 min.	February 1985(edited) April 1994(unedited)	November 1985(edited)	February 1988(edited) March 1998 (unedited)
	083	The Android Invasion	4 x 25 min.	March 1995	March 1995	March 1996
	084	The Brain of Morbius	1 x 60 min. 4 x 25 min.	July 1984(edited) July 1990(unedited)	November 1987(edited) January 1991(unedited)	November 1987(edited) February 1997 (unedited)
	085	The Seeds of Doom	6 x 25 min.	August 1994 2 x VHS	October 1994	September 1995

DVD and Blu-ray releases

Season	Story no.	Serial name	Number and duration of episodes	R2 release date	R4 release date	R1 release date
13	080	Terror of the Zygons[lower-alpha 1]	4 × 25 min.	29 July 2013[2] 30 September 2013[3][lower-alpha 2]	2 October 2013[4]	8 October 2013[5]
	081	Planet of Evil	4 × 25 min.	15 October 2007[6]	5 December 2007[7]	4 March 2008[8]
	082	Pyramids of Mars[lower-alpha 3][9]	4 × 25 min.	1 March 2004[10]	10 June 2004[11]	7 September 2004[12]
	083	The Android Invasion[lower-alpha 4]	4 × 25 min.	9 January 2012[13][14]	5 January 2012[15][16]	10 January 2012[17]
	084	The Brain of Morbius	4 × 25 min.	21 July 2008[18]	2 October 2008[19]	7 October 2008[20]
	085	The Seeds of Doom	6 × 25 min.	25 October 2010[21]	2 December 2010[22]	8 March 2011[23]

1. Advanced release in region 2 as part of 'The Fourth Doctor Time Capsule' set with no special features on 29 July 2013.
2. The Region 2 release of Terror of the Zygons was released in advance as part of The Fourth Doctor Time Capsule box set without special features, and was later re-released on its own with special features.
3. Also available as part of The Doctors Revisited 1-4 in Regions 1 and 4.
4. Only available as part of the U.N.I.T. Files box set in Regions 2 and 4. Only available individually in Region 1.

In print

Serial name	Novelisation title	Author	First published
Terror of the Zygons	Doctor Who and the Loch Ness Monster	Terrance Dicks	15 January 1976
Planet of Evil	Doctor Who and the Planet of Evil	Terrance Dicks	21 July 1977
Pyramids of Mars	Doctor Who and the Pyramids of Mars	Terrance Dicks	16 December 1976
The Android Invasion	Doctor Who and the Android Invasion	Terrance Dicks	16 November 1978
The Brain of Morbius	Doctor Who and the Brain of Morbius	Terrance Dicks	19 May 1977
The Seeds of Doom	Doctor Who and the Seeds of Doom	Philip Hinchcliffe	17 February 1977

References

1. "Ratings Guide". Doctor Who News. Retrieved 27 December 2014.
2. "Doctor Who: The 4th Doctor Time Capsule". 29 July 2013. Retrieved 16 November 2017 – via Amazon.
3. "Doctor Who - Terror of the Zygons". 30 September 2013. Retrieved 16 November 2017 – via Amazon.
4. "Doctor Who by Roadshow Entertainment - Shop Online for Movies, DVDs in Australia". Fishpond. Retrieved 16 November 2017.
5. "Doctor Who, Story 80: Terror of the Zygons". 8 October 2013. Retrieved 16 November 2017 – via Amazon.
6. "Doctor Who - Planet of Evil". 15 October 2007. Retrieved 16 November 2017 – via Amazon.
7. "Doctor Who Planet of Evil by Roadshow Entertainment - Shop Online for Movies, DVDs in Australia". Fishpond. Retrieved 16 November 2017.
8. "Doctor Who: Planet of Evil". 4 March 2008. Retrieved 16 November 2017 – via Amazon.
9. "Doctor Who: The Doctors Revisited 1-4 (2013)". Amazon. Retrieved 11 January 2014.
10. "Doctor Who - Pyramids Of Mars". 1 March 2004. Retrieved 16 November 2017 – via Amazon.
11. "Doctor Who Pyramids of Mars by Roadshow Entertainment - Shop Online for Movies, DVDs in Australia". Fishpond. Retrieved 16 November 2017.
12. "Doctor Who: Pyramids of Mars". 7 September 2004. Retrieved 16 November 2017 – via Amazon.
13. "Doctor Who: U.N.I.T Files Box Set (DVD)". BBC Shop. Missing or empty |url= (help)
14. "Doctor Who: U.N.I.T. Files". British Video Association. Retrieved 28 November 2013.
15. "Doctor Who UNIT Files Box Set". Australian Broadcasting Corporation. Archived from the original on 3 December 2013. Retrieved 29 November 2013.
16. "Doctor Who UNIT boxset 3 DVD Set". BBC. Retrieved 29 November 2013.
17. "Doctor Who: The Android Invasion". 10 January 2012. Retrieved 16 November 2017 – via Amazon.
18. "Doctor Who: Brain of Morbius - No 84". Retrieved 16 November 2017 – via Amazon.
19. "Doctor Who The Brain of Morbius by Roadshow Entertainment - Shop Online for Movies, DVDs in Australia". Fishpond. Retrieved 16 November 2017.
20. "Doctor Who: The Brain of Morbius". 7 October 2008. Retrieved 16 November 2017 – via Amazon.
21. "Doctor Who: Seeds of Doom - Episode 85". Retrieved 16 November 2017 – via Amazon.
22. "Doctor Who Seeds of Doom by Roadshow Entertainment - Shop Online for Movies, DVDs in Australia". Fishpond. Retrieved 16 November 2017.
23. "Doctor Who: The Seeds of Doom". 8 March 2011. Retrieved 16 November 2017 – via Amazon.