From Wikipedia, the free encyclopedia Samuel "Sam" Hoffenstein (October 8, 1890 - October 6, 1947) was a screenwriter and a musical composer. Born in Russia, he emigrated to the United States and began a career in New York City as a newspaper writer and in the entertainment business. In 1931 he moved to Los Angeles, where he lived for the rest of his life and where he wrote the scripts for over thirty movies. These movies included Dr. Jekyll and Mr. Hyde (1931), The Miracle Man (1932), Phantom of the Opera (1943),