Marcus Aquila and his patron Rutlius Scaurus are tasked with rooting out a spy ring operating in the lands into which their imperial master Severus's armies are advancing. The quest to find and subvert their foes' informers will place the two friends at great risk, with torture and death the price of any mistake. While success will put them in the front rank against battle-hardened legions, hungry for revenge, in a bloody struggle to determine the fate of Asia's loyalty.
