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:

Peter Cushing
Second Officer 

Joan Bennett
Princess Maria Theresa 

Alan Hale
Porthos 

Montagu Love
Spanish Ambassador 

Lane Chandler
Captain of Fouquet's Guards 

Nigel De Brulier
Cardinal Richelieu