Lady in the Iron Mask on AllMovie

As indicated by the title, Lady in the Iron Mask is a distaff version of the famous Alexandre Dumas yarn. D'Artagnan (Louis Hayward) and his fellow musketeers vow to defend France's Princess Anne (Patricia Medina) to the death. It seems that Anne has been thrown into a dungeon with her face enveloped in an iron mask, while her long-lost sister Louise (also Patricia Medina) is placed on the throne by scheming Duke De Valdac (John Sutton). D'Artagnan and his pals must rescue the princess before the impostor goes through with an arranged marriage to King Phillip of Spain (Hal Gerrard). Porthos, Aramis and Athos are played respectively by Alan Hale Jr., Judd Holdren (TV's Commando Cody) and Steve Brodie.