The first important deal was the acquisition of the rights to Avery Hopwood's 1919 Broadway play, The Gold Diggers, from theatrical impresario David Belasco. However, Rin Tin Tin, a dog brought from France after World War I by an American soldier, established their reputation. Rin Tin Tin debuted in the feature Where the North Begins. The movie was so successful that Jack signed the dog to star in more films for $1,000 per week. Rin Tin Tin became the studio's top star. Jack nicknamed him "The Mortgage Lifter" and the success boosted Darryl F. Zanuck's career. Zanuck eventually became a top producer and between 1928 and 1933 served as Jack's right-hand man and executive producer, with responsibilities including day-to-day film production. More success came after Ernst Lubitsch was hired as head director; Harry Rapf left the studio to join Metro-Goldwyn-Mayer. Lubitsch's film The Marriage Circle was the studio's most successful film of 1924, and was on The New York Times best list for that year.