Portia and Lucius enter the street in front of Brutus' house, where Portia is extremely excited. She suggests that Brutus has told her of his plans (in fact, he has not had an opportunity), and she repeatedly gives Lucius incomplete instructions concerning an errand to the Capitol. She struggles to maintain self-control and reacts violently to imagined noises that she thinks emanate from the Capitol.
A soothsayer enters and says that he is on his way to see Caesar enter the Senate House. Portia inquires if he knows of any plans to harm Caesar, and he answers only that he fears what may happen to Caesar. He then leaves to seek a place from which he can speak to Caesar. Portia sends Lucius to give her greetings to Brutus and to tell him that she is in good spirits, and then to report back immediately to her.
