According to IMDb, the alternate title for Four Sided Triangle is Monster and the Woman. This raises the question of who the monster is suppose to be, the second Lena or Bill? One can also look at the story as a variation of James Whale's Bride of Frankenstein with the second Lena, known as Helen, feeling a sense of horror at living an unasked for life and rejection of her lover. While not using Whale's extreme angles in the cinematography, the black and white shots evoke Whale's two Frankenstein films with the electronic gizmos and the expressionistic lighting. Looking past the sci fi and horror trappings, Whale and Fisher have made films about the desperation of unrequited love.

Provoking men into fighting over her was a hallmark of Barbara Payton's life. Without forcing it too much, there are some parallels between Payton's recent life caught between Franchot Tone and Tom Neal with Lena's relationship between the genteel Robin and the more impulsive Bill. One has to wonder if Payton was cast in the role of Lena because of the similarities to her life, as well as the obvious attraction of getting a Hollywood star, albeit a rapidly falling one, for a bargain. When Lena returns to England, it is to sell her mother's belongings, enough to support herself for three or four months. When asked what she will do past that time, Lena remarks that she has no purpose in continuing her life as she has failed at everything she has tried. While Lena proves to easily regain her sense of self-esteem from being a help-mate to her two admirers, Payton's own life prefigures Lena's hinted at appetite for self-destruction. Even a random selection from Payton's ghost-written autobiography, I Am Not Ashamed almost describes what happens in Four Sided Triangle: "I had a lot of electricity in me and men didn't just hit and run with me. They usually came back for seconds and with their tongue dragging."