The movie opens with a text that refers to "the preceding film" which should be at the end.
Psychic Jeane Dixon's name is misspelled onscreen as "Jeanne Dixon".
The storming of the Tuileries Palace is said to have taken place on June 21, 1791. However, this was the date that King Louis XVI, Marie Antoinette and their children began the Flight to Varennes. The storming of the Tuileries took place on August 21, 1792.
Orson Welles states that King George VI was crowned in 1936. Although George VI inherited the British throne following the abdication of his elder brother Edward VIII on December 11, 1936, his coronation did not take place until May 12, 1937.