Doctor Who: Season 12, Episode 7

The Ark in Space: Part Three (8 Feb. 1975)

TV Episode  -   -  Adventure | Drama | Sci-Fi
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Ratings: 8.1/10 from 202 users  
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Knowing that Noah has been infected by the Wirrn, the Doctor persuades Vira to halt the reviving of her people, knowing it will place them in danger as well.



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Title: The Ark in Space: Part Three (08 Feb 1975)

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Episode complete credited cast:
Ian Marter ...
Wendy Williams ...
Kenton Moore ...
Richardson Morgan ...
John Gregg ...
Gladys Spencer ...
High Minister (voice)
Stuart Fell ...
Wirrn Operator


Knowing that Noah has been infected by the Wirrn, the Doctor persuades Vira to halt the reviving of her people, knowing it will place them in danger as well.

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Release Date:

8 February 1975 (UK)  »

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Aspect Ratio:

1.33 : 1
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Did You Know?


This episode takes place on the Nerva Beacon in 16087. See more »


Doctor Who: Absorbed? "We shall absorb the humans"? Endoparasitism?
Sarah Jane Smith: [to Vira] He talks to himself sometimes because he's the only one who understands what he's talking about.
See more »

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User Reviews

"We'd be happily dead." Decent episode.

Doctor Who: The Ark in Space: Part 3 starts with the realisation that Commander Noah (Kenton Moore) has been infected by the Wirrn & is slowly being transformed into one, the Doctor (Tom Baker) has worked out that the Wirrn want to literally eat the humans aboard the Nerva & it's up to him to try & stop them...

This Doctor Who adventure was episode 7 from season 9 that aired here in the UK during early 1975, directed by Rodney Bennett this is an improvement over Part 2. The script by Robert Holmes is getting to the business end after a dull Part 2 which makes for a more entertaining 25 minutes, this one has people being taken over by green slime, giant green space slugs, laser battles & the usual quality dialogue which amuses. In fact I'd say maybe there's perhaps a bit too much going on here but the time restrictions these made-for-TV show's have will always result in these sorts of problems.

There's quite a horror element in The Ark in Space, giant slugs, alien creature using us as food for it's young & people being engulfed by green slime & turned into these creatures. However this being Doctor Who the special effects aren't always convincing, it's painfully obvious that the Wirrn larvae & the green stuff that grows on Noah is nothing much more than bubble wrap spray painted green. Most of us Doctor Who fans forgive these shabby looking special effects & just enjoy the series for what it is but I'd be lying if I said the constant poor effects didn't occasionally hurt the show, I suppose it depends on your tolerance level & how much your prepared to forgive.

The Ark in Space is shaping up quite nicely & this as a stand alone episode is an improvement on Part 2.

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