 Janet Gaynor became a top star with the synch-sound but dialogueless "Seventh Heaven" and "Sunrise", as did Joan Crawford with the technologically similar "Our Dancing Daughters" (1928).Greta Garbo was the one non–native English speaker to retain Hollywood stardom on both sides of the great sound divide.Silent film extra Clark Gable, who had received extensive voice training during his earlier stage career, went on to dominate the new medium for decades; similarly, English actor Boris Karloff, having appeared in dozens of silent films since 1919, found his star ascend in the sound era (though, ironically, it was a non-speaking role in 1931's "Frankenstein" that made this happen, but despite having a lisp, he found himself much in demand after).