Alfred Hitchcock wrote in 1982: "The Hitchcock touch had four hands, and two were Alma's." Hitchcock began work on his tenth film, "Blackmail" (1929), when its production company, British International Pictures (BIP), converted its Elstree studios to sound. The film was the first British ""; it followed the first American sound feature film, "The Jazz Singer" (1927). "Blackmail" began the Hitchcock tradition of using famous landmarks as a backdrop for suspense sequences, with the climax taking place on the dome of the British Museum. It also features one of his longest cameo appearances, which shows him being bothered by a small boy
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,