In "Hollywood Babble On" Marlene Dietrich is quoted as saying, "I did one film for Alfred Hitchcock. Jane Wyman was in it. I heard she'd only wanted to do it if she were billed above me, and she got her wish. Hitchcock didn't think much of her. She looks too much like a victim to play a heroine, and God knows she couldn't play a woman of mystery - that was *my* part. Miss Wyman looks like a mystery nobody has bothered to solve."
Because Patricia Hitchcock (played Chubby Bannister in this film) bore a resemblance to the star Jane Wyman, her father Alfred Hitchcock asked her for doubling for Wyman in the scenes that required "danger driving" in the beginning of the film.
The scenes where Jane Wyman first enters Marlene Dietrich's home undercover she introduces her self as Doris Tynsdale, but Dietrich refers to her first as Phyliss, then Elsie, then Doris, then lastly Mavis. It was classic dialogue play for Hitchcock.
The trivia items below may give away important plot points.
This movie is significant because it broke a long-established cinematic convention that flashbacks were always a true account of earlier events. In this film, though, the opening flashback turns out to be a lie, a device which at first baffled then enraged cinemagoers who felt that they had in some way been cheated.
Alfred Hitchcock built the plot of this film based on lies - one after another. The characters are telling one lie after another from the beginning of this film. But Hitchcock built up the last part of this film by revealing the truths - one after another. The truths the major characters and the audience didn't know.
Alfred Hitchcock's Stage Fright is very different from the novel "Outrun the constable" by selwyn jepson. Alfred Hitchcock made his own adaptation for this film with his wife Alma Reville and Screenwriter Whitfield Cook. In the novel, Freddie Williams is the killer and there is no false flashback. In the novel, the role of Commodore Gill was also a small role. Alfred Hitchcock added a biblical reference in this film where "Eve" gets deceived in the "beginning" of the film.