The 'Human' Factor (1975)

R  |   |  Drama, Thriller  |  29 April 1977 (West Germany)
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Ratings: 5.9/10 from 291 users  
Reviews: 12 user | 18 critic

After his family is brutally murdered for an unknown reason, a computer engineer sets out to find those responsible.



(original screenplay), (original screenplay)
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Cast overview, first billed only:
John Kinsdale
Mike McAllister
Dr. Lupo
Rita Tushingham ...
Taylor (as Tom Hunter)
Frank Avianca ...
Haydée Politoff ...
Arthur Franz ...
Gen. Fuller
Fiamma Verges ...
Ann Kinsdale
Mark Kinsdale (as Danny Houston)
Richard Harrison ...
Jeffrey Kinsdale (as Ricky Harrison)
Hillary Lief ...
Linda Kinsdale
Michael Mandeville ...


After his family is brutally murdered for an unknown reason, a computer engineer sets out to find those responsible.

Plot Summary | Add Synopsis


Every 24 hours an American family will be killed!...and only the human factor can stop it.


Drama | Thriller


R | See all certifications »

Parents Guide:





Release Date:

29 April 1977 (West Germany)  »

Also Known As:

The Human Factor  »

Filming Locations:

Company Credits

Production Co:

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Technical Specs


Sound Mix:



Aspect Ratio:

1.85 : 1
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Did You Know?


Do not confound this Human Factor with another one, with the very same title, even the french one, made four years later by Otto Preminger. Both last features of those great directors. See more »


In the final scene when Kinsdale shoots the fleeing terrorist in the back, after his Colt 1911 runs out of ammunition, the slide does lock back, and he continues to pull the trigger with the gun making a clicking sound, as if it is a double action. The 1911 is a single action and will not make that sound. See more »


Referenced in Adjust Your Tracking (2013) See more »

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User Reviews

Take anything, but not my family!
26 October 1999 | by (United States) – See all my reviews

Having just finished reading Maltin's one line summary of this film, I have to assume that he didn't see it, or has forgotten it if he did. "A violent, bloody chronicle..." he opines. Any man who truly loved his family would become violent and would spill the blood of those who took away his most cherished things on earth, his wife and children. I saw this film during it's initial release in Europe in 1975 and it gave me an enhanced appreciation for my family. I highly recommend it and will purchase it on DVD if it's available. The only reason I don't already own this film is I'd forgotten the title over the years. Thanks to the staff of IMDb for the excellent filmographies that allow searches of this type.

12 of 18 people found this review helpful.  Was this review helpful to you?

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Alternative title nonterraqueous
Great revenge movie! Ricky-50
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