Flawed but compelling semi-classic British 1950s sci-fi. Four-Sided Triangle (a clever title which perfectly conveys the story and themes - based on the novel of the same name) is known to aficionados, but has been largely and undeservedly forgotten by the larger cinephile culture. Like most British science fiction of that era it is idea and story driven rather than being driven by special effects. If the archetype of a scientist standing next to a tube into which a person steps sounds familiar, it's interesting to note that this movie predates The American film The Fly by three years. The flaws include missed opportunities (which I can't describe without giving away spoilers) and a pedestrian ending that takes no risks. Nonetheless, if you like British science fiction from that era Four-Sided Triangle is a must-see.
Review of Four Sided Triangle
