When he is told that Macduff has deserted him, Macbeth begins the final stage of his tragic descent. His first move is the destruction of Macduff's wife and children. In England, Macduff receives the news at the very moment that he swears his allegiance to the young Malcolm. Malcolm persuades him that the murder of his family should act as the spur to revenge.
Meanwhile, in Scotland, Lady Macbeth has been taken ill: She walks in her sleep and seems to recall, in fragmentary memories, the details of the murder. Now, in a series of alternating scenes, the action of the play moves rapidly between the advancing army of Malcolm and the defensive preparations of Macbeth. When Malcolm's army disguise themselves with sawn-off branches, Macbeth sees what appears to be a wood moving towards his stronghold at Dunsinane. And when he finally meets Macduff in single combat, his sworn enemy reveals that he came into the world by cesarean section; he was not, precisely speaking, "born of woman." On hearing this news, Macbeth rejects one final time the Witches' prophecy. With a loud cry, he launches himself at Macduff and is slain. In the final scene, Malcolm is crowned as the new king of Scotland, to the acclaim of all.
