- Box Office Bomb: Budget, $2,500,000-$3,000,000. Box office, $1,500,000-$2,668,000.
- California Doubling: Set in Sydney, filmed in England and California.
- Channel Hop: The film was produced by Hitchcock's Transatlantic Pictures, but released by Warner Bros.. After the film flopped at the box office, the bank took possession of the film, and it's now owned by CBS, who has licensed it to both Image Entertainment and Kino Lorber for home video.
- Creator Backlash: Alfred Hitchcock didn't care for the film. In fact, after it flopped, he was reluctant to make another drama film for years. He also regretted casting Joseph Cotten.
- Executive Meddling: Alfred Hitchcock intended this film to be a drama. But the publicity department released the posters of this film as if it belonged in the genres of "Mystery" and "Horror." One of the posters of this film read "Murder will Out" and "A Woman driven by the demons of hell!" So when the film was released, Alfred Hitchcock was severely criticized for the lack of thrilling moments in this film compared to his previous films.
- Old Shame: In his autobiography "Vanity Will Get You Somewhere", actor Joseph Cotten referred to this film as "Under Corny Crap". Supposedly he had also done so on set, invoking Alfred Hitchcock's ire; intentionally or otherwise, the director did not use him again for six years.
- What Could Have Been: Alfred Hitchcock originally wanted Burt Lancaster for Sam Flusky, but he was deemed too expensive.
Trivia / Under Capricorn