Of Unknown Origin is a 1983 psychological horror film directed by George P. Cosmatos in his North American film debut, and starring Peter Weller, Jennifer Dale, Lawrence Dane, Maury Chaykin, Kenneth Welsh, Louis Del Grande and Shannon Tweed in her film debut. Based on the 1979 novel The Visitor by Chauncey G. Parker III, it focuses on a mild-mannered Manhattan banker who becomes increasingly obsessive and destructive in his attempts to kill a rat loose in his renovated brownstone. The film's title refers to the misconception that rats have no known origin.

Of Unknown Origin (1983)
Directed by George P. Cosmatos
Description by Wikipedia
Movie Info
Budget
$4,000,000
Box Office
$1,080,470
Themes
Tags
Animal Attack, Giant Rat, House, Manhattan, Mind-Bending/Experimental, Mousetrap, New York City, Poison, Rampage, Rat, Unknown Origin
Attributes
Filming Location: Montreal
Narrative Location: New York City
Narrative Location: New York City
Alternate Titles
Av okänt ursprung
SE
D'origine inconnue
FR
D'origine inconnue : terreur à domicile
CA
De origen desconocido
ES
Di origine sconosciuta
IT
Eredete Ismeretlen
HU
Hivatlan látogató
HU
La rata asesina
MX
La rata satánica
MX
Mad House
DK
Mad Teeth
JP
Maddo Tîsu
JP
Nieuchwytny wróg
PL
O Inimigo Desconhecido
BR
O Visitante Sinistro
PT
Of Unknown Origin
AU, CA, EC, GR, GB, US
Origem Desconhecida
BR, PT
Terreur a domicile
CA
Terreur à domicile
FR
Tuntematon vaara
FI
Αγνώστου Προελεύσεως
GR