Continuity mistake: When the Jesuit tries to kill King Louis, Louis grabs a long bladed knife and stabs the Jesuit in the chest, but when the camera pulls back, the knife is gone, and no one has made a move to pull it out of his chest. Only the blade that D'Artanian threw at him is there.
Trivia: After Porthos tries to hang himself, Aramis reveals he had already sawn the beam to prevent the hanging. His comment when the barn subsequently collapses, "I'm a genius, not an engineer" was written as a pun in the original French manuscript. (Je suis un génie, pas un ingénieur).
Question: When Christine commits suicide, there's a note that said something like "For my sister." My question is, why would the note say that? I know that Christine had a sister with some kind of condition but before that, Christine found out that Louis was responsible for Raoul's death and was very upset by it, so shouldn't the note have said something like, "For my Raoul" or "For Raoul"? Why was it for her sister? I'm confused by that part. Can someone please explain?