Madeleine Carroll suffered at the hands of Alfred Hitchcock's quest for realism, right down to the real welts on her wrists from the long days of being handcuffed to Robert Donat.
According to one of his sons, John Buchan (upon whose 1915 novel the film was based) was impressed with the film, despite its departures from his original plot.
One day on the set Alfred Hitchcock handcuffed Robert Donat and Madeleine Carroll together and pretended for several hours to have lost the key
The 62 imported sheep, upon arriving at the sound stage, immediately went to work on the bracken and bushes that had been brought with them. The infuriated crew had to replace the real plants with ones hastily bought from a local nursery.
The music that the chorines dance to after Mr. Memory is shot is "Tinkle, Tinkle, Tinkle" written by Harry M. Woods.
Visa de censure en France (1951): #11533/D.
Alfred Hitchcock:
about seven minutes in, tossing some litter as Richard and Annabella run from the music hall.
Alfred Hitchcock:
[Innocent man wrongly accused]
Richard Hannay (Robert Donat) is framed for the murder of Annabelle (Lucie Mannheim).
Alfred Hitchcock:
[MacGuffin]
The secret McGuffin in The 39 Steps is retold by Mr. Memory (Wylie Watson).
Alfred Hitchcock:
[stairs]
Pamela listening to a conversation from the top of a staircase.