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,
Charles Henry Hitchcock He used the tetrahedral hypothesis which had been first published in 1875 by William Lowthian Green to explain the formation of the Earth's land masses. His distant cousin was Harvey Rexford Hitchcock (1800–1855), who was an early missionary to Hawaii. This led to a publication of a book the volcanoes of Hawaii. Hitchcock was a founder of the Geological Society of America, and in 1883 vice-president of the American Association for the Advancement of Science. He left a collection of botanical specimens to the University of North Carolina Herbarium. Charles Henry Hitchcock Charles Henry Hitchcock (August 23, 1836 – November