Invasion of the Body Snatchers (1956) is a low-budget science fiction film that has become a classic. The suspense of the film lies in discovering, along with Miles, the central character (played by Kevin McCarthy), who is "real" and who is not, and whether Miles and Becky (played by Dana Wynter) will escape the pod takeover. As the center of the film moves outward from a small-town group of neighbors to the larger political scene and institutional network (of police, the FBI, hospital workers), the ultimate question is whether "they" have taken over altogether. Although Invasion can be...