Macbeth Act 4

The Act opens with the witches conjuring apparitions for Macbeth to see. These visions give him warnings, not to trust Macduff and not to worry until the forests turn against his rule. Considering this, he orders the deaths of Macduff's wife and son. The murderer arrives at Castle Macduff just as Lady Macduff is pondering the injustice of the play as a whole, where foul is fair and fair is foul. Her son is murdered, but she appears to escape, although this is not made clear to the audience. Aside, Macduff and Malcolm discuss how Scotland is being destroyed by Macbeth's rule, and resolve to usurp him when possible.