A little girl is found wandering in the desert, the sole survivor of her family, and the only word she can say is, "Them!" A local police officer (James Whitmore) and an FBI agent (James Arness) investigate the mystery with the help of a lovely scientist (Joan Weldon).
One of the best of the fifties sci-fi movies, "Them" has a good cast, a serious and at times, even educational tone to the script, and giant ants that are usually half-hidden in the dark. (Just as well, because they're pretty lame by today's standards, but still fun for nostalgia-fans.)
It's wholesome entertainment that would only scare small children these days, but those who love the genre will appreciate the sincere and solemn characters who risk their lives to save mankind from atom bomb-mutated bugs. A simple story with good acting that is still entertaining.