The Musketeers: Season 3, Episode 5

3 - 5: To Play the King

Lucien and Feron stage a prison breakout to cover Lucien's theft of the king's gold reserve. D'Artagnan befriends an insane prisoner who thinks that he's Louis, while Aramis and Constance discover that an imprisoned locksmith's wife is being held as leverage to force the man to assist in the robbery.