Shadow of Destiny - Realm of Night, #1

After an act of revenge puts him in trouble with the law, 17 year old Seth has a chance run-in with a young mage named Viera and gets thrown right into the middle of a decade-old war between the Empire of Nocturne and the acolytes of the Light that oppose them. Hunted, desperate, and with nowhere to turn but to each other, Seth and Viera set off on a quest to deliver a stolen talisman to Viera's home city before the empire can reclaim use of its devestating power.
Though their biggest obstacle may prove to be the dark truth of their origins, and the ghosts of their past rising up to take vengeance for the sins of their parents.