In 1956, MGM cut an 11-minute scene from “Forbidden Planet” that was never meant to reach theaters. The scene involved Anne Francis and her pet tiger. Something about innocence, power, and an ancient myth that made censors panic. For decades, only a handful of people knew it existed. The scene explained why the tiger suddenly attacks Altaira after her first kiss. But the explanation was too controversial for 1950s audiences. What MGM buried reveals a dark secret about the film’s true meaning.