Macbeth and Banquo are discussing the witches’ prophecies once again. Banquo has been dreaming about them, but Macbeth lies and says they’ve slipped his mind. He then tells Banquo to stick with him, and he’ll be rewarded in the future. Banquo agrees, so long as he gets to keep his conscience clear. After he departs, Macbeth sees a vision of a dagger drawing him toward Duncan’s room. That’s when he hears a bell, which is his signal that the time for murder has arrived.