 The two built the movie from a series of conversations they had with one another and decided to refine "Creep" while they were filming, which enabled them to film and screen portions of the film to see what would or would not work on camera.As a result, the film had multiple alternate end scenarios and Duplass stated that there were "10 to 12 permutations of each scene".Of the creative process for his character, Josef, Duplass explained