In the next scene we see Simon surrounded by the plebeian and patrician members of his Council. They are discussing whether they should make peace with the republic of Venice. Suddenly a crowd enters shouting for death to Simon. They are chasing Gabriele. Gabriele confesses that he killed Lorenzino for trying to kidnap Amelia. As Lorenzino lay dying he had said that he had been told by an important person to kidnap her. Adorno guesses that Simon must have ordered the kidnapping. He is about to attack him when Amelia rushes in and stops the fight Simon arrests Gabriele. He realizes that Paolo must be the real kidnapper, and makes everybody (including Paolo) curse him. Simon and his daughter are left alone on stage at the end of the act.