The Man in the Iron Mask - 1976
Directed by Mike Newell.  Teleplay adapted by William Bast and original novel by Alexandre Dumas.

Cast:
Richard Chamberlain - King Louis XIV/Philippe 
Patrick McGoohan - Fouquet 
Louis Jourdan - D'Artagnan 
Jenny Agutter - Louise de la Valli�re 
Ian Holm - Duval 
Ralph Richardson - Colbert de Voliere 
Vivien Merchant - Queen Maria Theresa 
Brenda Bruce - Queen Anna of Austria 
Esmond Knight - Armand 
Godfrey Quigley - Baisemeaux 
Emrys James - Percerin 
Denis Lawson - Claude 

Short Summary:
The story of Louis XIV of France and his attempts to keep his identical twin brother Philippe imprisoned away from sight and knowledge of the public, and Philippe's rescue by the aging Musketeers, led by D'Artagnan.
(By Jim Beaver)
Click here to read the novel:-)
The Video is off the market, but check Ebay periodically or wait a few months.  A DVD is coming out from MGM or Artisan eventually...
Links:

Richard Chamberlain's Official SIte

Hosted by www.Geocities.ws

1