A behind-the-scenes showcase of how screen tests for studio executives are made and used in the Hollywood casting process. Some of the featured performances include actress Betty Jane Rhodes... Read allA behind-the-scenes showcase of how screen tests for studio executives are made and used in the Hollywood casting process. Some of the featured performances include actress Betty Jane Rhodes and opera singer Gladys Swarthout.A behind-the-scenes showcase of how screen tests for studio executives are made and used in the Hollywood casting process. Some of the featured performances include actress Betty Jane Rhodes and opera singer Gladys Swarthout.