Act III, Scene II
In this scene, Hastings ignores Lord Stanley's initial warning sent by the messenger when Stanley has a nightmare in which a boar attacks and kills Hastings. The boar is Richard's heraldic symbol, and according to the messenger, Stanley is afraid for his safety and that of Hastings.
Catesby, sent by Richard to discover Hasting's feelings towards Richards scheme to rise to power, enters the scene and insinuates a double meaning behind his lines, "'Tis a vile thing to die…when men are unprepared and look not for it." By referring to the death of Rivers, Vaughan and Grey when they believed they were safe, he implies the death of Hastings as he too believes he is safe, and is, again, ignored.
Stanley arrives and complains of his forebodings, but Hastings cheerfully reassures him of their safety under Richard.Act III, Scene IV
Richard accuses Queen Elizabeth to be conspiring with Hasting's wife, Shore, as his deformed arm is claimed to be withering and has had a spell casted on it. By doing so he manipulates the Mayor of London to eliminate Hastings and secure his throne.