Premise: The Monkey's Mask is an international co-production 2000 thriller film directed by Samantha Lang. It stars Susie Porter and Kelly McGillis. Porter plays a lesbian private detective who falls in love with a suspect (McGillis) in the disappearance of a young woman. The film is based on the verse novel of the same name by Australian poet Dorothy Porter.
Hypothesis: There was only one country involved in the production of this movie.