The Duke's Motto (Le bossu) 99 years old

The Prince of Gonzague kills the Duke of Nevers and tries to marry his widow, Aurore de Nevers, so he can get his hand on his fortune. The Chevalier Lagardère takes the child Irène de Nevers with him to Spain only to return disguised as a hunchback years later to unmask the Prince for the villain he is.