Hamlet is Shakespeare's most popular, and most puzzling, play. It follows the form of a "revenge tragedy," in which the hero, Hamlet, seeks vengeance against his father's murderer, his uncle Claudius, now the king of Denmark. Much of its fascination, however, lies in its uncertainties.

Among them: What is the Ghost--Hamlet's father demanding justice, a tempting demon, an angelic messenger? Does Hamlet go mad, or merely pretend to? Once he is sure that Claudius is a murderer, why does he not act? Was his mother, Gertrude, unfaithful to her husband or complicit in his murder?

...

In 1603, James VI of Scotland ascended the English throne, becoming James I of England. London was alive with an interest in all things Scottish, and Shakespeare turned to Scottish history for material. He found a spectacle of violence and stories of traitors advised by witches and wizards, echoing James's belief in a connection between treason and witchcraft.

In depicting a man who murders to become king, Macbeth teases us with huge questions. Is Macbeth tempted by fate, or by his or his wife's ambition? Why does their success turn to ashes?

Like other plays, Macbeth...