Tuttle over hears loud voices from the castle and is exited to see that Hamlet has returned. Knowing he is back Tuttle makes the journy back to tell Fortinbras what he has learned now that everything is on track.
Tuttle tells Fortenbras that Hamlet will kill the king and he leaves out the part about hiring pirets to bring Hamlet back. Fortenbras is happy to hear this and now will begin to march to Denmark to enact his revenge on Hamlet.
But when he gets to the castle he finds every one dead and his long plan for revenge is now ruined.