During the scene with Dr. Brukmann in the park as he walks up to the schoolgirls, a brief snippet of the music piece "Funeral March for a Marionette" appears on the film soundtrack. This may well be the last time the piece could be used in a film without an immediate connection to Alfred Hitchcock, since only a year after this film was released, the theme became famous in the opening credits sequence of "Alfred Hitchcock Presents".
Check out Arthur Mullard as a police man outside the court house.
Kennedy quotes William Wordsworth's "Ode to Immortality" (1804): 'Shades of the prison-house begin to close Upon the growing Boy'.
When a reporter says, "Conscience does make cowards of us all," he is quoting Hamlet.
Helen Haye, who plays Jack Hawkins' mother in law, taught for many years at the Royal Academy of Dramatic Art (RADA). Among her prize pupils were Charles Laughton and John Gielgud.