Today, the theft of Leo's notebook has been masterminded by Piero de Medici, the father of one of Leo's closest friends, Lorenzo. But it proves to be no use to him because all the formulae and calculations are written in code.
Leo and Tom have an unusual commission. They're to paint the wedding portrait of Petronella, the unhappiest bride they've ever seen. Small wonder when they meet her husband to be, the evil loan-shark, Lucio.
Tom is really a girl called Lisa, who has chosen to live as a boy so as to fulfill her ambition to paint. But hanging out in all male company can be a strain, especially when Leo never notices her interest in him.
Claire and Jenny set out to rescue Jaime from his redcoat captors. When Murtagh joins up, they turn to unorthodox tactics to send word to Jaime, and when word finally arrives, the news isn't what anyone had hoped.
King Richard is called upon to settle a dispute between his cousin Henry Bolingbroke and Thomas Mowbray. Richard calls for a duel but then halts it just before swords clash. Both men are banished from the realm. Richard visits John of Gaunt, Bolingbroke's Father, who, in the throes of death, reprimands the King. After seizing Gaunt's money and lands, Richard leaves for wars against the rebels in Ireland. Bolingbroke returns to claim back his inheritance. Supported by his allies, Nothumberland and the Duke of York, Bolingbroke takes Richard prisoner and lays claim to the throne.