The Man in the Iron Mask 1939

Tyrannical King Louis XIV learns that he has an identical twin brother, Philippe, who was raised from birth by his late father's trusted friend D'Artagnan and his faithful musketeers, Porthos, Athos and Aramis. After Philippe falls for the king's betrothed, Spanish Princess Maria Theresa, Louis imprisons him, forcing his brother to don an iron mask that will slowly suffocate him -- and it's up to D'Artagnan to rescue him.

Cast:

Louis Hayward
King Louis XIV / Philippe of Gascony 

Joan Bennett
Princess Maria Theresa 

Warren William
D'Artagnan 

Joseph Schildkraut
Fouquet 

Alan Hale
Porthos 

Walter Kingsford
Colbert