Hamlet confronts his mother Gertrude in her room about remarrying his uncle Claudius after the death of Hamlet's father. When Gertrude cries out in fear, Hamlet kills Polonius, who was hiding behind a curtain. Hamlet then shows Gertrude two portraits, one of his late father and one of Claudius, commenting on his father's superiority. A ghost of Hamlet's father appears, though only Hamlet can see it, making Gertrude think he is mad.