James Stewart wanted to star in this movie very much, but Hitchcock said that James looked too old and rejected James, but in fact the actor Gary Grant is four years older than James.
When filming the scene where Roger was hiding in the upper bunk of the train, the custom-made upper bunk was too small, so that the scene in the movie where Roger got bored after he came out of the hiding place appeared in the movie.
Jesse Royce Landes plays Roger's mother, who is actually only seven years older than Gary Grant.
Eve's line "I never discuss love when hungry" is a post-dubbing, but in fact she said "I never make love on an empty stomach (make love)".
Before shooting this movie, Hitchcock joked that he would name the movie "The Man on Lincoln's Nose".
Hitchcock was very dissatisfied with the clothes designed by the company for Eva, so he had to take her to the mall to pick clothes in person.
Many of the cars used in the movie are private cars produced by Ford in 1958.
When the film was last screened, at most eight yards of the film were cut off, and the eight yards only took about five seconds.
