Emperor Nero's grip on power is weakening. In every shadow he sees an enemy & like a cornered animal he lashes out at every perceived threat. His paranoia settles on the figure of Gnaeus Domitius Corbulo Rome's greatest General who leads the imperial legions in the East. So popular is Corbulo with his men that he effective presides over an Empire within an Empire. Is Corbulo preparing to march against Rome & take the violet? Gaius Valerius Verrens Hero of Rome is ordered to Antioch with the power of life & death over Corbulo a soldier he worships. There he finds word of his mission has preceded him & every man's hand is turned against him. But Corbulo's eyes are not on Rome but on a new threat to the Empire's border. The Parthian King of Kings Vologases is marching to war & with such an army that if not stopped he might overwhelm the entire Roman east. Valerius marches at Corbulo's side. Outnumbered they make a stand in the barren wastes beyond the Tigris to meet Vologases in an epic contest of military might & ingenuity that will decide the fate of the Empire. & while he fights for the Empire & for his own survival on the battlefield Valerius must decide whether to complete his mission or risk incurring his Emperor's dangerous wrath.