Of Unknown Origin_
"Two forces have claimed the house. Only one will survive."
A man who recently completed rebuilding a townhouse becomes obsessed with a rat infestation until it becomes an interspecies duel.
Starring
Peter Weller, Jennifer Dale, Lawrence Dane
Updated Feb 16, 2026
WHERE TO WATCH
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Year context
Of Unknown Origin was released 43 years ago in 1983.
Overview
A man who recently completed rebuilding a townhouse becomes obsessed with a rat infestation until it becomes an interspecies duel.
Of Unknown Origin is a Horror film with a runtime of 1h 28m.
CAST (16)
Peter Weller
Bart Hughes
Jennifer Dale
Lorrie Wells
Lawrence Dane
Eliot Riverton
Kenneth Welsh
James Hall
Louis Del Grande
Clete
Shannon Tweed
Meg Hughes
Keith Knight
Hardware Salesman
Maury Chaykin
Dan Errol
Leif Anderson
Peter Hughes
JT
Jimmy Tapp
Meg's Father
Gayle Garfinkle
Janis Wycoff
EP
Earl Pennington
Mr. Thompson
JW
Jacklin Webb
Newspaper Vendor
Bronwen Mantel
Florence Riverton
Aimée Castle
Birthday Party Child
TO
Tara O'Donnell
Birthday Party Child
BOX OFFICE
$4.0M
Budget
DETAILS
Release
Status
Released
Runtime
88 min (1h 28m)
Country
Rating
5.8/10 (110 votes)
Budget
$4,000,000
FREQUENTLY ASKED QUESTIONS
What is Of Unknown Origin about?
A man who recently completed rebuilding a townhouse becomes obsessed with a rat infestation until it becomes an interspecies duel.
How long is Of Unknown Origin?
Of Unknown Origin has a runtime of 88 minutes (1h 28m).
Who stars in Of Unknown Origin?
The cast of Of Unknown Origin includes Peter Weller, Jennifer Dale, Lawrence Dane, Kenneth Welsh, Louis Del Grande.
What is the rating of Of Unknown Origin?
Of Unknown Origin has a rating of 5.8 out of 10 based on 110 votes on TMDB.
GENRES (1)
Horror
