The Best Movies Based on Dean Koontz Books 

Ranker Film
Updated July 29, 2019 117 votes 36 voters 1.7k views 12 items

List Rules Vote up your favorite movies based on novels by Dean Koontz.

American author Dean Koontz may have started his literary career writing science fiction novels, but he quickly moved over to find a home within the horror genre. Hollywood took notice; here are several films based on Dean Koontz books. Now it’s up to you to decide which are the best Dean Koontz movies.

The prolific writer has over a dozen novels that have topped the New York Times Best Seller’s List. His first bestseller, Demon Seed, sold over two million copies in 1977 and turned into a movie just a couple years later. It would be over ten years until one of Koontz’s works hit the silver screen again. In 1988, Watchers starring 1980s star Corey Haim, a science fiction-horror hybrid about a really smart dog, terrified and delighted movie audiences... The story was beloved enough that two more Watchers movies were made.

More recent Dean Koontz films include Odd Thomas (2013) starring Anton Yelchin as a fry cook who is able to see dead people. Ben Affleck (Phantoms), Alicia Silverstone (Hideaway), and Mark Hamill (Watchers Reborn) are just a few other Hollywood stars who have appeared in Koontz screen adaptations. Which Dean Koontz books made into horror movies are your favorites? Let us know by voting up or down in the list below.

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Odd Thomas is based on the novel of the same name.

Odd Thomas is a 2013 American mystery thriller film based on Dean Koontz's novel of the same name. It is directed, written and co-produced by Stephen Sommers and stars Anton Yelchin as Odd Thomas, with Willem Dafoe as Wyatt Porter and Addison Timlin as Stormy Llewellyn. ...more on Wikipedia

Actors: 50 Cent, Willem Dafoe, Patton Oswalt, Anton Yelchin, Gugu Mbatha-Raw, + more

Released: 2013

Directed by: Stephen Sommers

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Demon Seed is based on the novel of the same name.

Demon Seed is a 1977 American science fiction–horror film starring Julie Christie and directed by Donald Cammell. The film was based on the novel of the same name by Dean Koontz, and concerns the imprisonment and forced impregnation of a woman by an artificially intelligent computer. ...more on Wikipedia

Actors: Julie Christie, Robert Vaughn, Fritz Weaver, Gerrit Graham, Berry Kroeger, + more

Released: 1977

Directed by: Donald Cammell

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Phantoms is based on the novel of the same name.

Phantoms is a 1998 American-Japanese science fiction horror film adapted from Dean Koontz's 1983 novel of the same name. Directed by Joe Chappelle with a screenplay by Koontz, the film stars Peter O'Toole, Rose McGowan, Joanna Going, Liev Schreiber, Ben Affleck, Nicky Katt, and Clifton Powell. The film takes place in the peaceful town of Snowfield, Colorado, where something evil has wiped out the community. It is up to a group of people to stop it or at least get out of Snowfield alive. ...more on Wikipedia

Actors: Ben Affleck, Rose McGowan, Liev Schreiber, Peter O'Toole, Robert Knepper, + more

Released: 1998

Directed by: Joe Chappelle

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Watchers is based on the novel of the same name.

Watchers is a 1988 horror film starring Corey Haim, Michael Ironside, Barbara Williams and Lala Sloatman. It is loosely based on the novel Watchers by Dean R. Koontz. The film was shot in Vancouver, British Columbia, Canada, and grossed $940,173 in the United States. There have been three sequels released Watchers II, Watchers 3 and Watchers Reborn. ...more on Wikipedia

Actors: Corey Haim, Michael Ironside, Lala Sloatman, Blu Mankuma, Dale Wilson, + more

Released: 1988

Directed by: Jon Hess

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