Hamlet is a tragedy by William Shakespeare, in which the prince of Denmark is visited by the ghost of his father, who reveals that he was murdered by his own brother Claudius. The ghost tells Hamlet to avenge his death by killing Claudius. In the play, the ghost is compelled to vanish at the sound of the cock’s crow, which heralds morning.
Or if thou hast uphoarded in thy life
Extorted treasure in the womb of earth,
For which, they say, you spirits oft walk in death,
[The cock crows.]
Speak of it: stay, and speak! Stop it, Marcellus.
Shall I strike at it with my partisan?
Do, if it will not stand.
[They strike at it.]
Act I, Scene 1