The Labyrinth of Love
Valerie, a maid of French descent (Monica Seller), comes to work for a family in Saigon of the 1930s/40s. One by one, she seduces the members of the family: the dame de la maison, the widower, young gay sonny with his friend from university, and grandpa.
Directors: Joe D'Amato
Writers: Leslie Wong
IMDB: tt0113590