The Duchess of Malfi is a wealthy young widow. Jealous of her fortune, her two brothers, the Cardinal and her twin Ferdinand, decide she must not remarry. To this end they introduce a spy into her household, the ruthless Bosola. The court of Malfi is a treacherous place, with political, religious and personal allegiances in constant conflict. But the Duchess is blinded to its dangers by her love for her servant, Antonio. When their marriage is revealed her outraged brothers determine on a devastating course of action. Revenge breeds revenge, love turns to hate and a powerful tale of despair and madness inexorably unfolds.