This genuine SF classic (1956) says a good deal more about the McCarthyist hysteria of the early 50s than about the danger of invasion from outer space by soul-stealing “pods.” Don Siegel’s superb little effort, with its matter-of-fact isolation of hero Kevin McCarthy (ironic, no?) from the smarmy complacency of a small town gone to hell—and way beyond—points the way to his gripping action films of the 60s and 70s (Madigan, Coogan’s Bluff, Dirty Harry).