Frenzy actual London serial murder cases: the Christie murders in the early 1950s, and the Jack the Ripper murders in 1888. Barry Foster has said that, in order to prepare for his role, he was asked by Hitchcock to study two books about Neville Heath, an English serial killer who would often pass himself off as an officer in the RAF. "Frenzy" was the third and final film that Hitchcock made in Britain after he moved to Hollywood in 1939. The other two were "Under Capricorn" in 1949 and "Stage Fright" in 1950 (although there were some interior and exterior scenes
The Man Who Laughs (1928 film) and Charles Puffy. The animal actor used for the role of Homo, the Wolf was a dog named Zimbo, who had previously appeared in the Fox Film's 1927 "Wolf Fangs". Following the success of Universal Pictures's 1923 adaptation of Victor Hugo's "The Hunchback of Notre Dame", the company was eager to release another film starring Lon Chaney. A treatment adapting "The Phantom of the Opera" was prepared, but rejected by the Universal executives. In its place, Chaney was offered the lead in a film version of Hugo's "The Man Who Laughs", to be produced under its French title ("L'Homme Qui