Hamlet: Spying Spying is a way of deceiving one another. In Shakespeare's Hamlet, the Prince of Denmark and Claudius do not trust each other. Polonious begins to spy on Hamlet to fulfill the wishes of the King of Denmark, Claudius. The timing of the spying is ironic. The two characters begin to scout each other at the same time. How will spying change the story in Hamlet? Hamlet finds out that Claudius was the murderer of his father, King Hamlet. He finds this information through a controversial source. The Ghost of Hamlet's father finds Hamlet and tells him of the secret. Then the Ghost asks Hamlet to seek revenge upon Claudius by killing him. The Ghost is controversi