Final answer:
Macbeth does not reveal the location of Duncan's son, Malcolm, in his letter to Lady Macbeth.
Step-by-step explanation:
In his letter to Lady Macbeth, Macbeth reveals everything except the location of Duncan's son, Malcolm. Macbeth informs Lady Macbeth that he has been given the title of Thane of Cawdor, which suggests his growing power and influence. He also expresses his ambition to become the next King of Scotland, indicating his desire for power. Additionally, Macbeth shares the prophecy of the witches, which predicts his future rise to kingship.
Learn more about Macbeth's letter to Lady Macbeth