In France twins are born, the younger one becomes an unpopular King whilst the elder is hidden away with his identity concealed behind an iron mask. The musketeers plan to rescue the rightful heir to the throne. The film is based on the novel by Alexander Dumas.
3/5 
Richard Chamberlain
Ian Holm
Ralph Richardson
Jenny Agutter 
Patrick McGoohan
Louis Jourdan
Brenda Bruce
Esmond Knight