6.1/10
2,492
42 user 49 critic

Of Unknown Origin (1983)

A man becomes destructively obsessed with killing a dangerous rat, which has taken residence in his, recently renovated, house.

Director:

George P. Cosmatos

Writers:

Chauncey G. Parker III (novel), Brian Taggert (screenplay)

On Disc

at Amazon

2 wins. See more awards »

Photos

Learn more

More Like This 

Leviathan (1989)
Adventure | Horror | Mystery
    1 2 3 4 5 6 7 8 9 10 5.8/10 X  

An American deep-sea mining colony stumbles upon a sunken Soviet vessel hiding a horrific secret.

Director: George P. Cosmatos
Stars: Peter Weller, Richard Crenna, Amanda Pays
Action | Thriller
    1 2 3 4 5 6 7 8 9 10 4.9/10 X  

Bishop, trusted advisor to the president, has shots fired at him when Pachenko comes to him about a traitor in highest level of government. He gets away from the cold blooded assassin twice. Will he find the traitor before getting killed?

Director: George P. Cosmatos
Stars: Charlie Sheen, Donald Sutherland, Linda Hamilton
Drama | History | War
    1 2 3 4 5 6 7 8 9 10 6.5/10 X  

Rome, March 23, 1944: 33 German soldiers are killed by a bomb. Lt. Col. Herbert Kappler is ordered to execute ten times that Italians.

Director: George P. Cosmatos
Stars: Richard Burton, Marcello Mastroianni, Leo McKern
The Beloved (1971)
Drama
    1 2 3 4 5 6 7 8 9 10 4.9/10 X  

Yanni returns to his homeland, on a Greek island, after several years in London. Soon he is searching for his teenager passion, Elena. She is a married woman now, and adultery leads to ... See full summary »

Director: George P. Cosmatos
Stars: Raquel Welch, Richard Johnson, Jack Hawkins
Drama | Thriller
    1 2 3 4 5 6 7 8 9 10 6.4/10 X  

Passengers on a European train have been exposed to a deadly disease. Nobody will let them off the train. So what happens next?

Director: George P. Cosmatos
Stars: Sophia Loren, Richard Harris, Martin Sheen
Action | Adventure | Comedy
    1 2 3 4 5 6 7 8 9 10 5.7/10 X  

A World War II adventure, involving a group of Allied P.O.W.s, Nazis, black market priceless art treasures, Greek resistance, a Greek monastery, and a secret German rocket base.

Director: George P. Cosmatos
Stars: Roger Moore, Telly Savalas, David Niven
Horror
    1 2 3 4 5 6 7 8 9 10 5.9/10 X  

A group of travellers make emergency landing on an island in the Pacific Northwest after their seaplane malfunctioned, and stumble across an isolated and psychopathic family.

Director: John Hough
Stars: Sarah Torgov, Terence Kelly, Mark Erickson
Brain Dead (1990)
Horror | Mystery | Sci-Fi
    1 2 3 4 5 6 7 8 9 10 6/10 X  

In a showdown of man versus machine, Martin plunges into a chaotic nightmare trying to save his mind from the megalomaniacal corporation.

Director: Adam Simon
Stars: Bill Pullman, Bill Paxton, Bud Cort
Crime | Horror | Thriller
    1 2 3 4 5 6 7 8 9 10 5.7/10 X  

A dedicated L.A. police detective and a female psychic must stop a demonic serial killer who was given the powers of resurrection, teleportation and possession.

Director: Robert Resnikoff
Stars: Lou Diamond Phillips, Tracy Griffith, Jeff Kober
Horror
    1 2 3 4 5 6 7 8 9 10 6/10 X  

A group of hippies wreak havoc on a small town and a young boy, whose grandfather and sister were attacked by them, decides to get even, with deadly results.

Director: David E. Durston
Stars: Bhaskar Roy Chowdhury, Jadin Wong, Rhonda Fultz
Wolfen (1981)
Horror | Thriller
    1 2 3 4 5 6 7 8 9 10 6.3/10 X  

A New York cop investigates a series of brutal deaths that resemble animal attacks.

Director: Michael Wadleigh
Stars: Albert Finney, Diane Venora, Edward James Olmos
Dead of Night (1974)
Drama | Horror | Thriller
    1 2 3 4 5 6 7 8 9 10 6.7/10 X  

A young soldier killed in Vietnam inexplicably shows up to his family home one night.

Director: Bob Clark
Stars: John Marley, Lynn Carlin, Richard Backus
Edit

Cast

Cast overview, first billed only:
Peter Weller ... Bart Hughes
Jennifer Dale ... Lorrie Wells
Lawrence Dane ... Eliot Riverton
Kenneth Welsh ... James Hall
Louis Del Grande Louis Del Grande ... Clete
Shannon Tweed ... Meg Hughes
Keith Knight ... Hardware Salesman
Maury Chaykin ... Dan Errol
Leif Anderson ... Peter Hughes
Jimmy Tapp Jimmy Tapp ... Meg's Father
Gayle Garfinkle Gayle Garfinkle ... Janis Wycoff
Earl Pennington Earl Pennington ... Mr. Thompson
Jacklin Webb Jacklin Webb ... Newspaper Vendor
Bronwen Mantel Bronwen Mantel ... Florence Riverton
Monik Nantel Monik Nantel ... Secretary
Edit

Storyline

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

Taglines:

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

Genres:

Horror | Thriller

Certificate:

R | See all certifications »

Parents Guide:

View content advisory »
Edit

Details

Country:

Canada | USA

Language:

English

Release Date:

24 November 1983 (USA) See more »

Also Known As:

Origem Desconhecida See more »

Filming Locations:

Montréal, Québec, Canada

Edit

Box Office

Budget:

$4,000,000 (estimated)

Opening Weekend USA:

$540,446, 27 November 1983

Gross USA:

$1,080,470

Cumulative Worldwide Gross:

$1,080,470
See more on IMDbPro »

Company Credits

Show more on IMDbPro »

Technical Specs

Runtime:

Sound Mix:

Mono

Color:

Color

Aspect Ratio:

1.85 : 1
See full technical specs »
Edit

Did You Know?

Trivia

The movie was "originally released in a longer version" according to 'Rating the Movies'. See more »

Quotes

Bart Hughes: You never said anything about rubber gloves, you boneheaded fart.
See more »

Connections

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

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

 
Peter Weller's almost one man show
2 April 2006 | by VampenguinSee all my reviews

Though I don't really consider it a horror film, if you are one of many who happens to be afraid of rodents this film will terrify you. Hell, even you you don't mind rodents it might freak you out a bit. Peter Weller is always a great actor, and he stars in this film as Bart, a man who wages an all out war with one hell of an angry rat while the rest of his life begins to fall apart because of it. He is the only leading actor in this film, and he carries it almost completely on his own. His dinner table speech about the dangers of rats was both hilarious and a bit unnerving at the same time. I liked how this film was almost self-mocking in parts, though it always kept a straight face about it and never went to far. The rat's point of view shots really show this. The scenes with the rat were all very well done, congrats to whoever trained the rat. The plot was very original, and I liked how smart the rat was. Always a couple steps ahead of poor ol' Bart. I think I jumped a foot when the damn thing came out of the toilet. Last but not least, that was one heck of a bat he made near the end! Overall, this is a great film. Admittedly it's a bit cheesy in places, but it knows what it is and handles itself very well. Highly recommended.

8.5/10


19 of 21 people found this review helpful.  Was this review helpful to you? | Report this
Review this title | See all 42 user reviews »

Contribute to This Page

Free Movies and TV Shows You Can Watch Now

On IMDb TV, you can catch Hollywood hits and popular TV series at no cost. Select any poster below to play the movie, totally free!

Browse free movies and TV series

Stream Popular Action and Adventure Titles With Prime Video

Explore popular action and adventure titles available to stream with Prime Video.

Start your free trial



Recently Viewed