Invasion of the Body Snatchers (1978) — Directed by Philip Kaufman — is one of the most chilling sci-fi thrillers ever made. When mysterious alien spores fall to Earth, they begin replicating humans — replacing them with emotionless copies. Set in San Francisco, this haunting remake of the 1956 classic explores paranoia, identity, and the terrifying question: “What if the people you love… aren’t really them anymore?”