Claudius angered Ophelia's brother to duel with Hamlet. As a result, both of them were killed by swords. Finally, Hamlet was poisoned by a sword before he died. In court, in front of all ministers, Klaus was convicted of killing his brother and usurping the throne. He was stabbed to death by his own sword. Revenge for the father, revenge for the dynasty, and lift the evil black fog hanging over the whole Danish people.