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Horror Planet (1981)

Inseminoid (original title)
A crew of interplanetary archaeologists is threatened when an alien creature impregnates one of their members, causing her to turn homicidal and murder them one by one.



(screenplay), (screenplay)

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2 wins & 1 nomination. See more awards »



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A "Making Of" for the 1981 science fiction film Horror Planet (1981).

Stars: David Baxt, Stephanie Beacham, Richard Gordon


Complete credited cast:
Robin Clarke ...
Jennifer Ashley ...
Barrie Houghton ...
Karl (as Barry Houghton)
Rosalind Lloyd ...
Trevor Thomas ...
David Baxt ...
John Segal ...
Kevin O'Shea ...


A group of scientists are working in a lab located on a distant planet. One of them, Sandy, is attacked, raped and impregnated by a monstrous creature. She then begins to stalk her colleagues one by one, killing them and drinking their blood. Written by Marty McKee <mmckee@soltec.net>

Plot Summary | Add Synopsis


Conceived in violence, carried in terror, born to devastate and brutalize a universe! See more »


Horror | Sci-Fi


R | See all certifications »

Parents Guide:





Release Date:

November 1982 (USA)  »

Also Known As:

Horror Planet  »

Box Office


$2,000,000 (estimated)

Company Credits

Production Co:

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Technical Specs

Sound Mix:


Aspect Ratio:

2.35 : 1
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Did You Know?


The bulk of the movie was filmed in The Chiselhurst Caves to enhance the production value, but resetting lights and moving cameras around the natural rock formations proved to be problematic and time consuming. See more »


When everyone has blocked themselves into a control room, Sandy decides to blow the door in with explosives near by. When the door flies off, it blows outwards towards her in the corridor, not inwards. See more »


Gary: She's very strong.
See more »


Referenced in Video Nasties: Moral Panic, Censorship & Videotape (2010) See more »

Frequently Asked Questions

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User Reviews

Gory British "Alien" copy
27 July 1999 | by (Illinois) – See all my reviews

Yes, indeed, the bloody British have done it again, and I literally mean "bloody". It's a low-budget ripoff of "Alien", one containing plenty of gory holes, limbs and entrails. Although the sets and visual effects are cheap-looking, the screenplay causes its characters to behave foolishly most of the time, and the electronic score may drive you mad, director Warren keeps up a brisk pace to prevent you from becoming bored, while Geeson delivers a pretty chilling performance.

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