When Leon Renault first enters the store and approaches Mme. Danton, he is holding a cigarette with his left hand. However, in the following cuts; the cigarette keeps switching back and forth between hands.
When the servant goes outside the house to investigate the dog barking, he discovered that the dog is dead. However, as he leaves the dog to return to the house; you could see the dog slightly lifting its ear.
In the French employment office, there is a blackboard with the heading "MUNCIPALE DE PARIS" and a list of job openings is printed on it. All the jobs, however, are listed in the English language when they should be in the French language.
When police officer Francois St. Cyr reads the French newspaper all the stories are in the French language except for the main headline story about Grand Duke Maxim which is written in English.