Plot Summary:Riccardo, governor of Boston at the end of the 17th century, falls in love with Amelia, wife of Renato, his secretary and intimate friend. Amelia returns Riccardo's love, but is discovered by her husband. At a masked ball Renato kills Riccardo, who, as he lies dying, declares Amelia's innocence and forgives Renato. An opera in 3 acts.