A1S5

• Macbeth's letter to Lady Macbeth reveals that he met the witches after helping win a battle and learned about his future as Lord of Cawdor and future king
• Lady Macbeth expresses doubt about Macbeth's character, believing he lacks the necessary ruthlessness to seize opportunities for power
• Lady Macbeth calls on evil spirits to fill her with cruelty and remove any guilt or remorse, preparing herself for the murder of King Duncan
• Lady Macbeth instructs Macbeth to act innocent but be prepared to commit regicide, ensuring their power and control for the future
• Macbeth and Lady Macbeth plan to murder King Duncan to fulfill the witches' prophecy and seize power