The Medford Public Library presents a free showing of the classic 1954 monster movie “Them!” in Bonsignore Hall. In the film, the earliest atomic tests in New Mexico cause common ants to mutate into giant man-eating monsters that threaten civilization. Starring James Whitmore, Edmund Gwenn, Joan Weldon and James Arness. Running time is 1 hour, 34 minutes. Refreshments provided.