 "Body Snatchers" is the third film adaptation of Finney's novel, the first being "Invasion of the Body Snatchers" in 1956, followed by a remake of the same name in 1978.The plot is centered around the discovery that people working at a military base in Alabama are being replaced by perfect physical imitations grown from plantlike pods.The duplicates are indistinguishable from normal people except for their utter lack of emotion.