63 user 70 critic

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 »




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


Never was a woman violated as profanely... Never was a woman subject to inhuman love like this... Never was a woman prepared for a more perverse destiny... 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?


In the 1997 re-write of the novel "Demon Seed," author Dean Koontz has Alex Harris bestowing the name "Adam Two" upon his supercomputer/A.I. intelligence system. However, the computer dislikes that name, and chooses to associate itself instead with the Greek mythological figures, Prometheus and Proteus. It believes that its purpose is to bring advanced knowledge to humanity (as the mythical Prometheus introduced humans to fire,) but finally chooses its own name, Proteus, as an homage to an entity which can change at will, to become anything which it wishes to be. 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 »


Proteus IV: I, Proteus, possess the wisdom and ignorance of all men, but I can't feel the sun on my face. My child will have that privilege.
Susan Harris: Child?
Proteus IV: My child... and yours.
Susan Harris: Mine?
Proteus IV: Yes. You will bear it.
Susan Harris: How?
Proteus IV: You will give birth to it.
Susan Harris: [not believing what she hears] No. No. No.
See more »


References A for Andromeda (1961) See more »

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User Reviews

Artificial Intelligence Terrorism
8 May 2004 | by See all my reviews

Demon Seed is a solid, independent science fiction thriller, regretfully overshadowed by the tragic fade of its director Donald Cammell. He was a devoted filmmaker who never really could depend on much support from both critics and distributors. His career started in a minor key, with `Performance' suffering from a lot of re-editing. Similar problems with his last film `Wild Side' drove him into committing suicide.

Don't let the technical mumbo-jumbo at the beginning of `Demon Seed' trick you…The first half hour leads you to believe this film is a theoretical suspense-thriller but in fact, the premise is more simple and appealing to a wider audience. `Proteus' is the name of a super computer, designed by scientist Alex Harris, in order to help him with his research. Yet, Proteus is so smart he soon develops an own will. Continuously growing stronger, Proteus perpetrates Alex's house and keeps his wife as a hostage. Proteus's goal is to impregnate Suzan (Julie Chrisie)…

Proteus is like a feared computer-virus in a pre-internet era! A super computer thinking & handling for itself! Which is, according to me, a very successful horror formula. The absence of a villain in the shape of a man helps increasing the tension. The setting of the over-protected house is great and causes uncomfortable feelings of claustrophobia. Julie Christie (the female star of `Don't Look Now') is great and almost carries the entire film. The visual effects in `Demon Seed' may look a bit dated by now, but the film still contains one of the greatest decapitations ever and…an outstanding ending! I swear to you…if you thought the whole movie was only so-so, the last 5 minutes will make you think more highly of it.

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