Who wrote the book that Peggy Robertson's 1948 movie is based on?
Peggy Robertson Margaret "Peggy" Robertson (née Singer; 13 September 1916 6 February 1998) was a British-born script supervisor and personal assistant to Alfred Hitchcock from the 1940s through the 1970s during which time she worked on the films "Under Capricorn" (1948) and "Stage Fright" (1950), "Vertigo" (1958), "Psycho" (1960), "The Birds" (1963), and all of the director's remaining films.
Kate Plus Ten Kate Plus Ten is a 1917 British crime novel written by Edgar Wallace. In 1938 it was made into a film "Kate Plus Ten". In 1967 it was adapted for the film "The Trygon Factor" starring Stewart Granger.