Devastated by his betrayal by Pascal, Micheletto kills his lover and subsequently disappears. Devastated by the loss of his loyal lieutenant, Cesare races to Naples to rescue Lucrezia, but she has already escaped her captors - with the aid of a sleeping potion. Brother and sister are reunited on the road back to Rome, and are so overjoyed to see one another that Alfonso (Sebastian De Souza) begins to suspect that their relationship seems more than that of ordinary siblings. Back in Rome, Alfonso becomes sullen and almost abusive, drinking heavily. Alexander, meanwhile, has come up with another plan with his friend Mattai (Brendan Cowell): they scheme to corner the market in Italian sulphur, thus denying anyone else the ability to manufacture gunpowder. Still, Alexander does not trust Cesare, who quickly uncovers his father's plot, but it is Mattai who persuades father and son to reconcile.