Alfred Hitchcock filmography the run. It also featured the first of his famous cameo appearances. Two years later he directed "Blackmail" (1929) which was his first sound film. In 1935 Hitchcock directed "The 39 Steps". Three years later he directed "The Lady Vanishes," starring Margaret Lockwood and Michael Redgrave. Hitchcock's British films – and many of his early American ones – are often mistakenly believed to be in the public domain. In fact, all of his films are under copyright in the US and UK. Nonetheless, bootlegs of his work continue to be widely disseminated. In 1940, Hitchcock transitioned to Hollywood productions, the
Alfred Hitchcock as he reads a book on the London Underground. In the PBS series "The Men Who Made The Movies", Hitchcock explained how he used early sound recording as a special element of the film, stressing the word "knife" in a conversation with the woman suspected of murder. During this period, Hitchcock directed segments for a BIP revue, "Elstree Calling" (1930), and directed a short film, "An Elastic Affair" (1930), featuring two "Film Weekly" scholarship winners. "An Elastic Affair" is one of the lost films. In 1933 Hitchcock was once again working for Michael Balcon at Gaumont British. His first film