Act 2, Scene 1.
Polonius, reynaldo to spy on his son laertes, in Paris.
Othelia tells her father, polonius, that she was scared of hamlet, as he came in to her private room, half undressed.
Polinius talks to hamlet, and decides , that he is mad with love for Ophelia.
Act 2, Scene 2.
Claudius talks to Rosencrantz and Guildenstern and tells them of the change in hamlets behaviour , and tells them to spy on hamlet, to find what is wrong with him.
Voltemand comes back from Norway and informs Claudius that the Norway are going to Poland, through Denmark, but they may attack Denmark on their passage through it.
React!