Because Lady Macbeth has corrupted Macbeth, he starts to become crazed with power and ambition. Since killing King Duncan, Macbeth thinks that he now has to kill everyone who would get in his way, so he chooses Banquo as his first target. Macbeth left alone, says “For Banquo’s issue have I filled my mind; for them the gracious Duncan have I murdered;” (III.i.58-59) Here is where we start to see Macbeth’s corrupted mind plan to kill Banquo for the same reason as to killing King Duncan. Macbeth eventually hires murderers to kill Banquo, telling them “I will advise you where to plant yourselves; Acquaint you with the perfect spy o’the time, the moment on't; for’t must be done to-night” (III.i.134-136) Evidently Macbeth is not the same as
