The Man in the Iron Mask 1939

Synopsis:

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.

Directed by: James Whale
Written by: George Bruce
Runtime: 112 minutes
Tagline: Free Him!
Cast:
Louis Hayward
Louis Hayward
King Louis XIV / Philippe of Gascony 
Joan Bennett
Joan Bennett
Princess Maria Theresa 
Warren William
Warren William
D'Artagnan 
Joseph Schildkraut
Joseph Schildkraut
Fouquet 
Alan Hale
Alan Hale
Porthos 
Walter Kingsford
Walter Kingsford
Colbert