Of Unknown Origin is a 1983 CanadianAmerican horror film directed by George P. Cosmatos and starring Peter Weller. It was written by Brian Taggert and based on the novel The Visitor by Chauncey G. Parker III. It was filmed on location in Montreal, Quebec but set in New York City. The film won two awards at the Paris Film Festival.
Vincent Canby of The New York Times had nothing but disdain for the movie, but lightly praised Wellers performance and opens his review
Source: Wikipedia