Demon Seed

1977 · 1h 34m · Released

R Horror, Science Fiction

A scientist creates Proteus, an organic supercomputer with artificial intelligence which becomes obsessed with human beings, and in particular the creator's wife.

Read the book by Dean R. Koontz

Ratings

Based on audience scores

5.9 The Movie Database

N/A IMDb

N/A Rotten Tomatoes

N/A Metacritic

Where to stream Demon Seed

Streaming now in the United States on fuboTV, Chilling, Fawesome, The Roku Channel, Plex, and Mometu.

Rent or buy in the United States on Amazon Video and Apple TV Store.

Trailers and promos

Trailer

Demon Seed (Modern Trailer)

The Evil A.I. Takes Over

Preview Clip

Top cast and crew

Donald Cammell Director

Julie Christie Susan Harris

Fritz Weaver Alex Harris

Gerrit Graham Walter Gabler

Berry Kroeger Petrosian

Lisa Lu Soong Yen

Larry J. Blake Cameron

JO John O'Leary Royce

Alfred Dennis Mokri

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Frequently asked questions about Demon Seed

Where can I watch Demon Seed in the United States?

Demon Seed is available to stream on fuboTV, Chilling, Fawesome, The Roku Channel, Plex, and Mometu in the United States, and to rent or buy on Amazon Video and Apple TV Store. Streaming availability is provided by JustWatch and can change over time.

Can I watch Demon Seed for free?

Demon Seed streams free with ads in the United States on Fawesome, The Roku Channel, Plex, and Mometu. A subscription is not required, though the service may ask you to register.

What are the ratings for Demon Seed?

Demon Seed scores 5.9 on The Movie Database.

Who stars in Demon Seed?

Demon Seed stars Julie Christie, Fritz Weaver, Gerrit Graham, Berry Kroeger, and Lisa Lu. Donald Cammell is the director.

How long is Demon Seed?

Demon Seed runs 1h 34m (94 minutes).

When did Demon Seed come out?

Demon Seed was released on April 7, 1977.

Which studio made Demon Seed?

Demon Seed was produced by Metro-Goldwyn-Mayer in the United States.

Ratings and streaming availability are aggregated from third-party sources; metadata from The Movie Database (TMDB), streaming data from JustWatch. This product uses the TMDB API but is not endorsed or certified by TMDB. Streaming availability checked September 2026.