To note, a rarity in Hitchcock, about a quarter scenes were filmed on real locations, namely the city of Santa Rosa, while the director generally favored the studio shooting.
The progression of the film is in full correlation with the relations of the uncle and his niece, the -quasi-incestueuse- attraction will gradually give way to repulsion. Here Hitch brush a parable about adolescence and the always difficult transition to adult life.
The film itself fascinating, underlines the objective that the director gives many of these movies: to make plausible what is already true.
This film stays with Psychosis one of the few Hitchcock films where the hero is a villain, brilliantly portrayed by the fascinating and disturbing Joseph Cotten.
Gordon McDonell was appointed to the Academy Award for Best Original Screenplay in 1944.