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Four Sided Triangle (1953)

Approved | | Romance, Sci-Fi | 15 June 1953 (USA)
Bill and Robin, helped by their childhood friend, Lena, develop a "reproducer" which can exactly duplicate any object. Bill, crushed when Lena marries Robin, convinces her to allow him to ... See full summary »


Terence Fisher


Terence Fisher (screenplay), Paul Tabori (adaptation) | 1 more credit »

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Complete credited cast:
Barbara Payton ... Lena / Helen
James Hayter ... Dr. Harvey
Stephen Murray ... Bill
John Van Eyssen John Van Eyssen ... Robin
Percy Marmont ... Sir Walter
Jennifer Dearman Jennifer Dearman ... Lena as a Child
Glyn Dearman Glyn Dearman ... Bill as a Child
Sean Barrett Sean Barrett ... Robin as a Child
Kynaston Reeves Kynaston Reeves ... Lord Grant
John Stuart ... Solicitor
Edith Saville Edith Saville ... Lady Grant


Bill and Robin, helped by their childhood friend, Lena, develop a "reproducer" which can exactly duplicate any object. Bill, crushed when Lena marries Robin, convinces her to allow him to duplicate her, so that he may have a copy of her for himself. The experiment, at first deemed a success, seems to have worked only too well as the duplicate, Helen, is such an exact copy that she also loves Robin, not Bill. Bill hopes to rectify the situation with another radical experiment. Written by Doug Sederberg <vornoff@sonic.net>

Plot Summary | Plot Synopsis

Plot Keywords:

based on novel | See All (1) »


She lived two amazing lives under his spell!


Romance | Sci-Fi


Approved | See all certifications »






Release Date:

15 June 1953 (USA) See more »

Also Known As:

The Monster and the Woman See more »

Company Credits

Production Co:

Hammer Films See more »
Show more on IMDbPro »

Technical Specs


Sound Mix:

Mono (RCA Sound System)

Aspect Ratio:

1.37 : 1
See full technical specs »

Did You Know?


James Hayter (Dr. Harvey) and Stephen Murray (Bill) died only four days apart: on March 27, 1983 and March 31, 1983 respectively. See more »


Lena: An empty mind... and a new beginning!
See more »


Referenced in Tales from the Crypt: Four-Sided Triangle (1990) See more »


Wedding March
Music by Felix Mendelssohn-Bartholdy
Arranged by Malcolm Arnold
See more »

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User Reviews

Something for nothing, and your women for free.
19 December 2000 | by curly-17See all my reviews

Bill and Robin are scientists, and rivals for the affection of Lena (played by Barbara Payton-- being the love interest of two men is basically the same role she played in "Bride of the Gorilla"- 1951). It's amazing what two scientists can do, in a barn they bought and converted into a workshop, and with only £2,000 for research funds. They create a machine called a "Duplicator," a.k.a. a "Reproducer," with 2 identical pods, (much like would be used in "The Fly"- 1958). This can "convert energy into matter" (more on that next paragraph). At first they make an exact replica of a watch, then another small object. The plot thickens: Robin marries Lena. Even though Bill could create copies of anything in the world-- gold, rubies, rare drugs, radium-- Bill only wants to create another Lena. The Duplicator has only worked on inanimate objects; Bill modifies it so it can make perfect duplicates of small animals. Oddly enough, Lena agrees to be duplicated. So now we have Lena, and her duplicate Helen. But, since Helen is a perfect copy, she too is in love with Robin! What will the lovesick Bill do now? A hokey, no-budget movie, typical of 1950s flicks with pseudo-science and trite plots. It's curious that even though inventor Bill can be a genius at science, he is a knucklehead at love.

The theme of this movie reminds me of lyrics to the song "Money for Nothing" by Dire Straits-- "Money for nothin' and your chicks for free." The Duplicator seems to create things: effortlessly, cost-free, and out of thin air, sort of like Barbara Eden did in "I Dream of Jeannie." Oh, they say that the matter "is created from energy." According to Einstein's equation, "E equals m c-squared" you can convert matter into energy (a lot of energy). In an atomic explosion, about one gram of matter (Uranium-235) will turn into the energy of 18-kilotons of TNT. This works both ways. You could theoretically convert energy into matter-- but then, it would take the energy of an 18-kiloton atomic bomb to produce one gram of matter! So it would take about the energy of 450 atomic bombs to create one pound of matter. Since Helen weighs over 100 pounds, you would need the energy of 45,000 atomic bombs to create that much matter. Wouldn't it be easier for Bill to try a dating service?

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