Reeves's career as Superman had begun with "Superman and the Mole Men", a film intended both as a B-picture and as the pilot for the TV series. Immediately after completing it, Reeves and the crew began production of the first season's episodes, all shot over 13 weeks in the summer of 1951. The series went on the air the following year, and Reeves was amazed at becoming a national celebrity. In 1952, the struggling ABC Network purchased the show for national broadcast, which gave him greater visibility.