Part 3 of 3. An in-depth and captivating look at the studio that produced such classic American films as "The Wizard of Oz," "Gone with the Wind ," and "Ben-Hur". From the Roaring '20s, when Louis B. Mayer joined Metro and Goldwyn, through its meteoric rise and gradual decline, examine the scandals, romances, tragedies and triumphs that made MGM one of the most acclaimed studios in the world. Combining film clips, interviews and rare behind-the-scenes footage to reveal a world that once was and will never be again. Join host Patrick Stewart in this fascinating examination of an empire that touched millions of people across the world.