Louis and Leopold compete for control of Spain, and Maria Theresa plays a dangerous game by supporting her lover rather than her husband. Philippe continues his investigation on the man with the iron mask.

Cast: George Blagden, Alexander Vlahos, Stuart Bowman, Evan Williams, Steve Cumyn, Rory Keenan, Jack Ellis, Tygh Runyan, Anthony Flanagan, James Flynn, Joe Sheridan, Tim Loane, Matthew McNulty, Dan Rosson, Jenny Platt