When the dumb show ends, the players perform the actual play, which depicts the same plot as the pantomime. An intermission follows the Player Queen's declaration that she will never remarry should the Player King die. Hamlet seizes the moment to ask Gertrude what she thinks of the play, and Gertrude answers that she is enjoying the play but that the "Lady doth protest too much."
Claudius asks Hamlet for the play's title, to which Hamlet replies, The Mousetrap. He says that the play presents the true story of a murder carried out in Vienna. He explains the action of the play, and Ophelia congratulates Hamlet for his story-telling skill. Hamlet makes a crude pun, suggesting that he could interpret the actions of Ophelia and her lover if he could watch them. Ophelia accuses him of being keen (cruel), and Hamlet responds with another sexual innuendo. Hearing the word keen to mean sexually eager, he tells her she would have to work hard to relieve his sexual urges. Ophelia laughs that he is wittier than she, but more indecent. Hamlet says that women take their husbands for better or worse but then they deceive them.
As Lucianus, the Player King's nephew, pours poison in the ears of the sleeping Player King, Hamlet explains that the murderer will presently win the love of the dead Player King's widow. Claudius rises and calls for lights to be lit. Polonius repeats the order for the lights and stops the play. The King and his court exit, leaving Hamlet and Horatio to debrief. The two agree that the King's reaction implicates him in the murder of King Hamlet, and Hamlet says he is now convinced of the Ghost's trustworthiness.
