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,
Sound film true boundaries of the cinema." Such opinions were not rare among those who cared about cinema as an art form; Alfred Hitchcock, though he directed the first commercially successful talkie produced in Europe, held that "the silent pictures were the purest form of cinema" and scoffed at many early sound films as delivering little beside "photographs of people talking". In Germany, Max Reinhardt, stage producer and movie director, expressed the belief that the talkies, "bringing to the screen stage plays ... tend to make this independent art a subsidiary of the theater and really make it only a substitute for