Them!' THEM! is a 1954 American science fiction-horror film about giant mutated ants. It was directed by Gordon Douglas and stars James Whitmore, Edmund Gwenn, Joan Weldon, and James Arness. The film follows an investigation by the United States Department of Agriculture into the cause of mysterious deaths in the New Mexico desert, which leads to the discovery of giant ants. The film was released to critical acclaim and was a box office success.