It is evidently clear from the discussion that Hamlet becomes the object of counter-revenge, Laertes seeking requital for the murder of his father. By the last act of the play, after his adventures at sea, Hamlet is utterly convinced of the rightness of his cause and necessity of killing Claudius, whom he describes as cancer in society. He himself sees as a humble instrument of heaven, and to fail his duty in removing that cancer would be at the peril of his own soul. Hamlet ends in Victory and failure. The possibility that a man has been picked out to do a deed which society condemns but which a higher, divine authority sanctions is balanced against the possibility that Ghost led Hamlet into delusion and error, and bewildered him till he died. Shakespeare’s Hamlet falls in the category of revenge play. It is called so as he has to avenge the death of his father whom he believes, has been murdered. This seems to be confirmed by the ghost as well. Is the presence of Ghost a hallucination or reality, it could never be confirmed but ghost gives Hamlet a motive, motive to avenge for his father’s death. His father’s death is a shock to him, when he arrives home he finds his mother already married to Claudius, his uncle and assuming the Thorne. Everything appears fishy to Hamlet.H e is unable to understand this fact how his own mother could haste into a new marriage bed when his father’s funeral ground is still fresh. There is no one to tell him the truth he cannot trust anyone even his own mother. Hamlet has no other way to extract the truth but to feign madness. A theme is defined as a central idea, which literary works convey. There are various themes that run in Hamlet. The first theme that is found in this work of Shakespeare is the Revenge. Hamlet is at the core a revenge tragedy. It is his desire for the vengeance that leads to his downfall.