The project began when the head of David Selznick's story department, Margaret McDonell, told Hitchcock that her husband Gordon had an interesting idea for a novel that she thought would make a good movie. His idea, called "Uncle Charlie", was based on the true story of
Earle Nelson, a serial killer of the late 1920s known as "the Gorilla Man".
Shadow of a Doubt was both filmed and set in
Santa Rosa, California, which was portrayed as a paragon of a supposedly peaceful, small American city. Although the film, made in 1943, alludes to World War II (with a headline featuring Admiral Tojo and a bar with a crowd of servicemen), the mood is that of a peaceful prewar American town. Since Thornton Wilder wrote the original script, the story is set in a small American town, a popular setting of Wilder's, but with an added Hitchcock touch to it. The director specifically wanted Wilder to work on McDonell's nine-page treatment because he admired
Our Town. In Patrick McGilligan's biography of Hitchcock, he said the film was perhaps the most American film that Hitchcock had made up to that time. The opening scenes take place in the
East Ward (aka the "Ironbound"/"Down Neck" section of
Newark, New Jersey). The city skyline and landmarks such as the
Pulaski Skyway are featured in the opening shot. The location shots were used to comply with the wartime
War Production Board restrictions of a maximum cost of $5,000 for set construction. An
Italianate-style house, built in 1872, was used for exterior shots of the Newton family home. As of 2024, it is still standing, located at 904 McDonald Avenue in Santa Rosa. The stone
railway station in the film was built in 1904 for the
Northwestern Pacific Railroad and is one of the few commercial buildings in central Santa Rosa to survive the
earthquake of April 18, 1906. The station is currently a visitor center and passenger service is provided by the
Sonoma–Marin Area Rail Transit system. The library was a
Carnegie Library which was demolished in 1964 due to seismic concerns. Some of the buildings in the center of Santa Rosa that are seen in the film were damaged or destroyed by
earthquakes in 1969; much of the area was cleared of debris and largely rebuilt. The film was scored by Dimitri Tiomkin, his first collaboration with Hitchcock (the others being
Strangers on a Train,
I Confess and
Dial M for Murder). In his score, Tiomkin quotes the
Merry Widow Waltz of
Franz Lehár, often in somewhat distorted forms, as a
leitmotif for Uncle Charlie and his serial murders. During the opening credits, the waltz theme is heard along with a prolonged shot of couples dancing. The image recurs frequently throughout the film, and Lehár's melody is an
earworm for several characters. When Young Charlie is on the verge of identifying it at the dinner table, Uncle Charlie distracts her. ==Cinematography==