Sound film "The Clue of the New Pin", a British Lion production using the sound-on-disc British Photophone system. In May, "Black Waters", a British and Dominions Film Corporation promoted as the first UK all-talker, received its initial trade screening; it had been shot completely in Hollywood with a Western Electric sound-on-film system. None of these pictures made much impact. The first successful European dramatic talkie was the all-British "Blackmail". Directed by twenty-nine-year-old Alfred Hitchcock, the movie had its London debut June 21, 1929. Originally shot as a silent, "Blackmail" was restaged to include dialogue sequences, along with a score and sound effects,
Henry Hitchcock son, Ethan Hitcocock, served as United States Secretary of the Interior under William McKinley. Another son, Henry Hitchcock, was a prominent attorney in St. Louis, Missouri. Henry Hitchcock attended Middlebury College for a while and then graduated from the University of Vermont in 1811. While studying law, he cultivated a small farm in order to provide for the needs of his family. He became a member of the bar in 1815 and handled several important lawsuits before leaving Burlington for the lure of what was then called the Southwest. He traveled by flat boat down the Ohio and Mississippi rivers,