Alexandre Dumas 
The Man in the Iron Mask [EPUB ebook] 

In the darkest depths of the Bastille, a man has been robbed of his freedom and identity, denied any knowledge of the nature of his crimes. Only a handful of people, including the corrupt King Louis XIV and his mother, Queen Anne, know who the prisoner is and why he has been locked away. But the secret of the man in the iron mask is about to be revealed.