Set amid the gloomy castles and lonely heaths of medieval Scotland, "Macbeth" is a dark and bloody drama of ambition, murder, guilt and revenge. Goaded by his ambitious wife, Macbeth murders Duncan, King of Scotland, in order to succeed to the throne. Tortured by his conscience and fearful of discovery, the Scottish nobleman becomes tangled in a web of treachery and deceit that ultimately spells his doom. Note. Explanatory footnotes.