Prince Hamlet is depressed. Having been summoned home to Denmark from school in Germany to attend his father's funeral, he is shocked to find his mother Gertrude already remarried. The Queen has wed Hamlet's Uncle Claudius, the dead king's brother. To Hamlet, the marriage is "foul incest." Worse still, Claudius has had himself crowned King despite the fact that Hamlet was his father's heir to the throne. Hamlet suspects foul play.When his father's ghost visits the castle, Hamlet's suspicions are confirmed. The Ghost complains that he is unable to rest in peace because he was murdered. Claudius, says the Ghost, poured poison in King Hamlet's ear while the old king napped. Unable to confess and find salvation, King Hamlet is now consigned, for a time, to spend his days in Purgatory and walk the earth by night. He entreats Hamlet to avenge his death, but to spare Gertrude, to let Heaven decide her fate.