Fabien knows Louis has killed the prisoner and deduces the truth about the Man in the Iron Mask. Philippe decides to leave the court. Leto convinces Maintenon to support the marriage of Louis and the Infanta Isabella.

Cast: George Blagden, Alexander Vlahos, Stuart Bowman, Evan Williams, Jean-Hugues Anglade, Marie Askehave, Geoffrey Bateman, Ken Bones, Yohann Chopin, Jessica Clark, Ernesto Costa, Steve Cumyn, Anthony Flanagan, Matthew McNulty, Benedita Pereira