His eyes were now completely adjusted to the faint moonlight. The road took them into a deep pine wood. They splashed through a puddle in a low place, then clambered up a slope.

Down the other side. At the bottom of the next slope, Daoud twisted around in the saddle. Letting go of the reins and guiding the horse with his knees, he aimed the crossbow at the top of the hill. When the first rider came over the crest, clearly visible in the moonlight, Daoud pressed the catch with his thumb and released the bolt. An instant later the man fell without a sound.

He told himself a warrior of God should not rejoice at the death of an enemy, but he could not help a small surge of satisfaction at his good shooting.

Daoud cranked the string back and another bolt snapped into place. He hit the next man on the downslope. It was a harder shot, and this man did not die instantly but toppled screaming out of the saddle.

After glancing forward to make sure of the road ahead, Daoud turned again and saw that the three remaining men had stopped, their horses milling around the fallen men. They would give up pursuit now, Daoud was sure of it. Doubtless none of them had any real weapons, and they could not contend with a crossbow.

He felt his lips stretch in a grin, and he sighed deeply with relief. He had been more worried than he realized.

He and his companions topped another hill, and when he looked back again their pursuers had disappeared below its crest.

Daoud raised his hand and called out, "Slow down to a trot. No one seems to be following us. We can be easier on the old man and the horses."

"And on Scipio," Celino said, pointing down to a great shadow racing with them along the side of the road. Daoud could hear the hound panting and his claws drumming on the paving stones. He wondered how long Scipio could keep up with galloping horses, then reminded himself that this was a hunting dog. Scipio could probably outrun horses.

"Soon the Appian Way will take us to the old walls of Rome," said Celino. "The watchmen there would question us. But we can go off to the left toward the Tiber and skirt the city."