DOCTOR

With the aid of some treacherous noblemen, the Norwegians have attacked Scotland. In the ensuing battle, Macbeth is instrumental in expelling the invaders, and is created Thane of Cawdor. Before he learns of this honour, he is greeted with the title by three witches who tell him he is to be King; they also tell Banquo that, though he will not be King himself, his descendants will. King Duncan names his son Malcolm the heir apparent, and invites himself to Macbeth’s castle, where Macbeth murders him, abetted by his wife. The night is troubled by unnatural, portentous events. When the assassination is discovered, Malcolm and Donalbain flee the country; suspicion falls on them, and the succession on Macbeth. Macbeth is troubled by the witches’ prophecy about Banquo. He has Banquo murdered, but Fleance escapes; Banquo’s ghost then appears when Macbeth wishes him present at a feast. Hecate rebukes the witches for failing to involve her in their dealings with Macbeth. Disgraced after his failure to attend Macbeth’s feast, Macduff goes to England to rally military support against Macbeth, who has become an egregious tyrant. The witches show Macbeth three apparitions which warn him to beware of Macduff, but also assure him that he cannot be harmed by anybody born of a woman, and that he shall never be defeated until Birnam Wood comes to Dunsinane; he is also shown a vision confirming that Banquo’s heirs will rule Scotland. Learning of Macduff's defection, Macbeth has his wife and family killed; grief steels Macduff's resolve. Lady Macbeth begins sleepwalking, disintegrates psychologically, and dies, possibly by suicide. When the English army enters Scotland with Malcolm at its head, the thanes join it, but Macbeth puts his trust in the witches’ prophecies. They prove to have been misleading: the English army disguise their numbers by carrying branches from Birnam Wood as they advance on Dunsinane, and Macduff proves not to have been born of woman but prematurely ripped from his mother’s womb. Macduff kills Macbeth, and Malcolm is established as King of Scotland; he awards his thanes the new style of earls.