Marcus did not come home. None of them did. Five thousand men. The entire Ninth Legion. Gone. There were rumors. Rumors that the tribes of Caledonia had annihilated them; devoured their lines like the ancient giant Cacus, who consumed live human flesh and displayed human heads on nails outside his cave on the Palatine Hill. I did not believe in monsters, only in gods and men. And I knew that the Romans had displeased the gods of Britannia, had spilt the blood of the tribes upon her dark, rich soil for generations. The Selgovae, the Parisi, the Carvetii. And the Brigante.