Very disappointed :(

The greatest movie ever!

Brilliant and touching

A film of deceptively outspoken contemporary relevance, this is cinema at its most alert, alarming and alive.

The premise is, of course, a couple of boyhood friends who have always been rivals for a cute girl, Lena. Robin is the one that always seems to ace out the other guy. But their friendship continues as they both seek out careers as scientists. When the threesome come together, the boys have been putting together quite the machine in an old barn where they used to put on plays (Mickey Rooney, are you listening). Anyway, they have made a great discovery. By boiling water in big flasks and using an oscilloscope, they have mastered duplicating any object they wish. Both of them continue to lust after Lena. After selling out to the government which will probably use it to mass produce atomic bombs, Robin announces he and the girl are going to get married. Of course, his rival is devastated. So what do you do when can't get the girl. You talk her into being duplicated. Anyway, the morality of such a move is certainly questionable, but the practicality of it is beyond belief. The one question to ask is "If the two women, one original and the other a clone, are exact duplicate, well.....think about it. Hammer films made this early flick and it's worth a look, but don't think too much.

I viewed this as I was looking at titles with James Payton in them. This is a little gem that has a good story-line which leaves you wanting more. The basic premise is good and not too complicated. The main actors are strong and likable. You feel for the scientist as he tries to replicate the woman of his dreams.Do not expect scares more a complex situation. There are no great special effects it is more the dialogue than the actions which make this a great film.This is one of Hammer's better films.Barbara Payton is great in one of her final roles. There does seem to be chemistry between the actors and they grab your sympathy.

Bill and Robin are two life long friends who have built a machine that can replicate anything . Another friend from childhood Lena arrives in the village and very quickly Lena and Robin fall in love and are married . This hurts Bill greatly because he to is in love with Lena and so duplicates Lena as Helen who is not only identical to Lena but has the same memories as her This is something of an obscure cult classic . Obscure in the fact that it never seemed to be broadcast on British television and cult classic in the fact that was the first science fiction movie produced by the Hammer studios and was directed by Terrance Fisher undoubtedly the finest of the studios in house directors . It's interesting that that the film opens with a religious quote because this predates other Hammer productions later in the decade namely THE QUATERMASS EXPERIMENT and FRANKENSTEIN that have the subtext that there's somethings science should never interfere with and mankinds thirst for knowledge might very well be its downfall . It does become very clear early on however that FOUR SIDED TRIANGLE is a forgotten film for a very good reason - it's not very good Don't be fooled that this is a science fiction from Hammer because the sci-fi element merely exists as a plot device . Two brilliant whizz-kid scientists invent a wonderful machine in their spare time that can duplicate anything , in effect a cloning machine that can clone anything . What a wonderful invention and as everyone points out this is the greatest thing humanity has ever invented and these two blokes built it in a shed in their spare time and probably with their own funds . How likely is that ? " Hold on Theo . HG Wells wrote The Time Machine and that featured an inventor building a time machine in his house . The novel changed literature and you have to suspend disbelief with these stories " Yes maybe but suspension of disbelief is not required with Wells who had an almost supernatural ability to make the incredible seem almost blasé . With this film you're constantly noticing how unlikely everything is . Lena , Bill and Robin are all roughly the same age when we're introduced to them as children then when we're introduced to them as adults Bill and Robin seem to be physically twice the age of Lena .Did Lena invent a time machine and go forward in time ? It's also difficult to buy in to Lena falling in love with Robin who is totally uncharismatic as is Bill . It's not a science fiction film anyway just a sort of love story that has a very dated plodding pace and the only drama takes place at the end and jars because it feels more like a pivotal inciting incident rather than a climax . Someone on this page compared the film to an episode of THE OUTER LIMITS and in parts that what it resembles but that classic American show would have grabbed the premise by the throat and would have done something with it unlike here

Four Sided Triangle was one of the first science fiction movies from Hammer. Another early one was Spaceways, made around the same time as this.Two mad scientists and a woman make a machine that can make copies of anything and when one of them marries the woman, he decides to make a copy of her as he is in love with her too. He succeeds but the problem is, her copy isn't so keen on him. At the end, the barn where their lab is burns down leaving one of the women alive. But which one? This is rather interesting stuff from Hammer and is a good early attempt by them at sci-fi. Bigger things followed though...The cast includes Barbara Payton (Bride of the Gorilla), James Hayter (Tom Brown's Schooldays), Stephen Murray and John Van Eyssen.This movie is worth seeing. Excellent.Rating: 3 stars out of 5.