Falling Action (Act 4) The three strange sisters show Macbeth three apparitions, or ghosts, who should serve as warning signs. Act 4, Scene 1 Macbeth sends men to kill the wife and son of Macduff in order to prevent any threats to his crown. Act 4, Scene 2 Macduff and Malcolm, King Duncan's son, come up with a plan to defeat Macbeth and give the throne to Malcolm. Act 4, Scene 3
