In disgrace after a mistake that cost the lives of half his men, Alexios arrives in Castellum. It's his first command, but it isn't really a promotion. The Frontier Wolves who man this outpost in the far north of Roman Britain are a fierce and savage bunch, a far cry from the regular legions he'd served in before. Alexios will only survive if he learns to understand them and win their respect - and he's determined to try.