The Perfectionist is a 1981 play by David Williamson. It was adapted into a film for television directed by Chris Thomson in 1985.
The plot revolves around an academic who is working on a PhD. His wife hires a Danish student to babysit their children.
In 1983 Patricia Lovell announced plans to produce a film version of the play directed by Williamson but they were unable to finance it. A telemovie was made in 1985. The telemovie was subsequently sold in multiple international territories, but also for television and direct-to-video.
In the United States, the film was released by New World Pictures under the title, Three's Trouble. The 1989 VHS spine identifies the genre, in New World Home Video house style, as "Sex/Comedy."