Factual error: The imprisoned Count is crawling through a tunnel with his neighbour prisoner leading the way. His neighbour prisoner has a lit candle showing the way, but when he breathes out, the candle goes out but the 'light' remains. You can clearly see smoke rising from the candle before the scene cuts away.
Trivia: Director Kevin Reynolds shot two versions of the scene with Villefort and Monte Cristo, one in which the pistol is loaded and one with the pistol not loaded. The original cut of the film had the loaded pistol, but it was changed after test audiences expressed their preference for an unloaded pistol scenario, thus having Villefort be forced to go to prison and suffer as Edmond had.
Question: In the prison, the priest has several books, a chair, table, etc. Where did he get these things? I assume he wasn't given them, as the prisoners are expected to live with absolutely no creature comforts. He could have made the chair and table, but out of what? He wouldn't have been given any materials. How would he make something out of nothing?