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.

Can we draw the following conclusion?
The film was based off of some poetry book
Yes