In fact, John is a person called paredros, created by the goddesses in Greek mythology just to help themselves. Although John has the 6th sense, he lives according to the strict positivist worldview. In the movie (and in the book), 3 different motifs of the mother goddess are actually shown. Their deceased daughter, Julia, and twin sisters. Maybe these 3 figures symbolize a single female god. Thinking about the expression on Julia's face after John's death; in other words, it is possible to see it as the re-emergence of the god who took his revenge. We also see that there are posters with feminist content in some scenes of the movie. I'm looking at it from a purely mythological perspective.