Macbeth and his wife murder Duncan in order to gain his crown, but the bloodbath doesn't stop there, and things supernatural combine to bring the Macbeths down.Macbeth and his wife murder Duncan in order to gain his crown, but the bloodbath doesn't stop there, and things supernatural combine to bring the Macbeths down.Macbeth and his wife murder Duncan in order to gain his crown, but the bloodbath doesn't stop there, and things supernatural combine to bring the Macbeths down.