35 user 39 critic

Of Unknown Origin (1983)

A man who recently completed rebuilding a townhouse becomes obsessed with a rat infestation until it becomes an interspecies duel.



(novel), (screenplay)

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2 wins. See more awards »



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Cast overview, first billed only:
Bart Hughes
Lorrie Wells
Eliot Riverton
Louis Del Grande ...
Meg Hughes
Keith Knight ...
Hardware Salesman
Dan Errol
Peter Hughes
Jimmy Tapp ...
Meg's Father
Gayle Garfinkle ...
Janis Wycoff
Earl Pennington ...
Mr. Thompson
Jacklin Webb ...
Newspaper Vendor
Bronwen Mantel ...
Florence Riverton
Monik Nantel ...


Bart Hughes has a pretty good life, a beautiful wife, a young son, a good job with promotion prospects, and a renovated brownstone in New York. When wife and kid leave for a vacation, Bart stays behind to work on a project that will earn him that promotion, unaware that a certain inhabitant of his basement has other plans for his time. Bart goes a bit bonkers trying to kill this rat, destroying most of his house in the process. Certain allegorical elements tie the household conflict to the "rat race" in his office, but the main event is certainly the night-and-day contest of wills between man and rodent. Written by Chris Holland <stomptokyo@aol.com>

Plot Summary | Add Synopsis


Peter Weller (Robocop) Turns his home into a battleground against an enemy... See more »




R | See all certifications »

Parents Guide:






Release Date:

24 November 1983 (USA)  »

Also Known As:

Origem Desconhecida  »

Filming Locations:

Box Office


$4,000,000 (estimated)

Company Credits

Show detailed on  »

Technical Specs

Sound Mix:


Aspect Ratio:

1.85 : 1
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Did You Know?


Debut cinema movie of actress Shannon Tweed. See more »


Bart Hughes: [Bart is setting traps] Watch and weep, you furry fucker.
See more »


Features The Old Man and the Sea (1958) See more »

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User Reviews

One of my all time favorites!
7 January 2004 | by (usa) – See all my reviews

Of Unknown Origin is an overlooked gem of a little movie. Not really a horror film, except that something does indeed go bump in the night, and often too. No, this is more of a psychological drama and Peter Weller bangs one out of the park with his performance as the yuppie forced to go to war with a rat. The movie gets down right primitive and to the point, and it's all Peter Weller and some excellent rat photography. I watch this movie about once a year and it's one of my all time favorites. The film isn't dated and the dvd transfer is good so check it out if you're looking for something a little different, something of quality, and not your normal run of the mill mindless horror flick.

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I saw this in a rat infested theater! DrHerbertWest
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