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
Hitchcock (film) film's premiere, Hitchcock first views the audience from the projection booth, looking out through its small window at them. Hitchcock then waits in the lobby for the audience's reaction, conducting slashing motions to their reactions as they scream on cue. The film is rewarded with an enthusiastic reception. With the film's screening so well received, Hitchcock publicly thanks his wife for helping make it possible and they affirm their love and partnership. At the conclusion at his home, Hitchcock addresses the audience noting "Psycho" proved a major high point of his career and he is currently pondering his next project.