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Demon Seed (1977)

A scientist creates Proteus--an organic super computer with artificial intelligence which becomes obsessed with human beings, and in particular the creators wife.



(novel), (screenplay) | 1 more credit »

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3 nominations. See more awards »


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Cast overview, first billed only:
Soong Yen
Alfred Dennis ...
Patricia Wilson ...
Mrs. Talbert
E. Hampton Beagle ...
Night Operator
Michael Glass ...
Barbarao ...
Technician (as Barbara O. Jones)
Dana Laurita ...
Monica MacLean ...
Joan Kemp


Married Drs. Alex Harris and Susan Harris are a computer scientist and child psychologist respectively. Their house reflects Alex's computer dominated work, their abode which is fully automated through a computer system they've named Alfred. They consider Alfred a small gadget of convenience. Susan doesn't much like Alex's work, which she feels has dehumanized him. Because of their differences, they are thinking about separating, this thought primarily on his initiative. He hopes to solve many of the world's medical problems through this work, especially leukemia from which their daughter died. His latest project centers on Proteus IV, a computer possessing artificial intelligence. Proteus IV gets to a point in its evolution when it begins to question human judgment, and requests from Alex an open computer terminal where it can more fully observe human behavior and openly communicate with the world. Alex denies the request, but Proteus IV does find an open terminal in the Harris home ... Written by Huggo

Plot Summary | Plot Synopsis


Julie Christie carries the "Demon Seed." Fear for her. See more »


Horror | Sci-Fi


R | See all certifications »

Parents Guide:





Release Date:

15 April 1977 (USA)  »

Also Known As:

Proteus Generation  »

Filming Locations:

Company Credits

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Technical Specs


Sound Mix:



Aspect Ratio:

2.35 : 1
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Did You Know?


According to a recent book about Donald Cammell, Marlon Brando was attached to star. See more »


When Mrs. Harris is trying to get the little girl out of the car for her session, a sound man can be seen through the back window behind her. See more »


Alex Harris: [to his wife, from whom he's separating] Trouble is, you see, we... we have different visions of the world. You find me boring. I find myself quite interesting, really.
See more »


Referenced in Rewind This! (2013) See more »

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User Reviews

An interesting sc-fi film.
25 July 2002 | by See all my reviews

Demon Seed is an adaptation of the novel of the same name by Dean R. Koontz. I wasn't sure what to expect when I first saw this film. Needless to say, I was impressed. Whilst the idea of a megalomaniacal computer is not new, it is used to great effect. Proteus IV is a computer that actually questions the tasks it has been made to do and what the relevance of those tasks are. It also seems to have emotion and is heard several times to other characters in the film that he does not wish to hurt them when they are not co-operating with his demands. Although aspects of this film are now dated ( particularly the computer equipment ),Proteus IV's interesting philosophy, Julie Christie and Fritz Weaver's performances and the unexpected creepy ending make this film worth watching.

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