"Invasion of the Body Snatchers" is a 1956 science fiction film directed by Don Siegel. The story follows a small-town doctor, Dr. Miles Bennell, who discovers that the residents of his town are being replaced by emotionless duplicates created from plant-like pods. These duplicates look identical to the original people but lack human feelings and individuality. As Dr. Bennell investigates, he realizes that the invasion is widespread and that he must find a way to warn others before he too becomes a victim. The film explores themes of conformity, paranoia, and the loss of identity, making it a classic in the genre.