"Manfred could try to influence the election of the pope," said Simon urgently. "Or he could try to control the next pope by taking him captive."
Louis rubbed his high forehead. "It has been done before, more than once."
Charles's large, hairy hand clamped down on Louis's forearm. "Simon has hit upon the key to all this, brother. Think how powerful the Ghibellini are in Italy now. They control Florence, Siena, Pisa, Lucca, and now Orvieto. With all those Ghibellino cities to the north of the Papal States and Manfred to the south, is it not obvious what Manfred is planning?"
Charles struck Louis's arm again and again with the flat of his hand to emphasize his point. No one else would dare touch the king like that, thought Simon.
"Obvious to you, perhaps," said Louis wryly. "I see only a man trying to protect himself."
"The instant Pope Urban dies, Manfred and his allies will attack. He will surround and seize the entire College of Cardinals. He will force them to elect the pope of his choice. We will lose the Papacy."
"We do not own the Papacy."
Charles leaned back, laughing without mirth. "Well, Manfred will own the Papacy if we do not stop him. And then you can forget about your Tartar alliance. You can probably forget about crusading altogether. A pope controlled by the Hohenstaufen would probably forbid you to crusade, under pain of excommunication. Do not forget, it was Manfred's father, Emperor Frederic, who made a treaty with the Sultan of Cairo."
Simon watched Louis closely to see what effect Charles's words were having. It was obvious that they were sinking in. A troubled frown drew Louis's pale brows together and tightened his mouth. Simon's heart began to beat faster as his hopes rose.
Charles went on. "If I go now, I go at the pope's invitation. And if Urban dies—"