But these were genres whose fantastic nature could also be used as cover for mordant cultural observations often difficult to make in mainstream movies. Director Don Siegel's "Invasion of the Body Snatchers" (1956), released by Allied Artists, treats conformist pressures and the evil of banality in haunting, allegorical fashion. "The Amazing Colossal Man" (1957), directed by Bert I. Gordon, is both a monster movie that happens to depict the horrific effects of radiation exposure and "a ferocious cold-war fable spins Korea, the army's obsessive secrecy, and America's post-war growth into one fantastic whole".