Screenwriter Jimmy Sangster, who adapted Mary Shelley's novel for Hammer, never mentioned seeing Subotsky's script or being aware of Rosenberg's involvement. Sangster had worked as a production manager and said that he was keenly aware of production costs and kept the budget in mind when writing the script. Sangster said that his awareness of cost influenced him to not write scenes involving the villagers storming the castle that was typically seen in the Universal horror films "because we couldn't afford it". Sangster in an interview with film historian Jonathan Rigby indicated that he hadn't seen any of the Frankenstein films that Universal made. He just adapted the book "the way I saw it".