The Ghost needed to appear , in order to guilt trip Brutus of the death of Caesar. He needed to pay for betraying him, therefore what better way to scare someone
? A Ghost. This Ghost would spook Brutus from his sorrows and persuade him to do things he wouldn't do. In this case The Ghost says "To tell thee thou shalt see me at Philippi "(P.65) . This quote shows how manipulative the Ghost is, he is sending Brutus off to Philippi to ultimately die for his wrong doings. In addition , who knows more than a Ghost himself ? He knows that Antony is prepared to avenge his former ruler, so he appears only to Brutus and tells him to go fourth in meeting "him" at Philippi. For example Antony declares " He shall not live ; look, with a spot I damn him...we shall determine How to cut off some charge in legacies,"(P. 53). This example infers that Antony wants Brutus dead and is prepared for war. This war is to seek revenge for Caesar and find justice. In the eyes of Caesar Brutus was his friend and someone to depend on. He had no idea that his "friend" would ultimately be the death of him. All these decisions Brutus has made will now affect his outcome in Rome. I believe he deserves a consequence for betraying his friend and killing him for. Thus, justice and revenge have led to the Ghost of Caesar to be apparent. It's an important event that will foreshadow what will happen in the end. Who will live and who will die ?