The battle for Hadrian's Wall has been won but the enemy is not destroyed. Calgus, the rebel war leader, has retreated deep into his people's northern territory. The new Roman
leader makes an audacious plan to take the legionsand more important, the cavalrynorth to their strongholds. Marcus Aquila, disguised as Centurion Corvus, is caught up in the campaign
even though it will mean constant danger of being discovered by his family's enemies. His protectors, though, are powerful.