Fresh from their victory in Germania, Marcus Aquila and the Tungrians have been sent to Dacia, on the north-eastern edge of the Roman Empire, with the mission to safeguard a major source of imperial power. The mines of Alburnus Major contain enough gold to pave the road to Rome.

With Rome no longer safe Marcus and the Tungrians are ordered east, to the desolate border lands where Rome and Parthia have vied for supremacy for centuries. Ordered to relieve the siege of an isolated fortress, their task is doomed to bloody failure unless they can turn the disaffected Third Legion into a fighting force capable of resisting the terrifying Parthian cataphracts. And Marcus must travel to the enemy capital Ctesiphon on a desperate...

The Tungrians have no sooner returned to Rome than they find themselves tasked with a very different mission to their desperate exploits in Parthia. Ordered to cross the river Rhenus into barbarian Germany and capture a tribal priestess who may be the most dangerous person on the empire's northern border, they are soon subject to the machinations of an old enemy who will stop at nothing to sabotage their plans before they have even set foot on the...

After saving the Empire's richest province from a foreign army, Marcus and the men who protect him have been in hiding. Their lives will be forfeit if they are seen in Rome. But times have changed. Marcus's protector, the patrician legion commander Scaurus, has been summoned home by his mentor, a powerful senator who has decided he must act to save the empire from its debauched ruler's reign of terror. Rome is a hotbed of conspiracy and treachery:...

Marcus Aquila and his patron Rutlius Scaurus have fought a superior enemy force to a standstill in Thracia, gaining the favour of the gods but paying a grievous cost in their family's blood. Battle-weary and mourning their losses, they are tasked with rooting out a spy ring operating in the lands into which their imperial master Severus's armies are advancing. Hunting down informers operating under the skilled and ruthless command of their sworn enemy...