Mark of the Thief Series (Volume 1-3) by Jennifer A. Nielsen

The Mark of the Thief book series by Jennifer A. Nielsen includes books Mark of the Thief, Rise of the Wolf, and Wrath of the Storm. This genre mash-up of history, fantasy, and action/adventure is fast-paced and explores themes such as class struggles, familial ties, and the immorality of slavery. Readers will have lots to digest as they quickly flip through the pages to see how Nic will escape his enemies to become a free man."

Book 1 : Forced to enter a sealed cavern that reputedly holds the lost treasures of Caesar, slave Nic discovers an amulet imbued with divine power and finds himself at the center of a conspiracy to overthrow the emperor and spark a war. 9780545561556

Book 2: Nic may have escaped enslavement in the mines outside of Rome, but his troubles are far from over. The Praetor War -- the battle to destroy Rome from within -- is in full force, and Nic is caught in the crossfire. The secretive Praetors are determined to unlock a powerful amulet ... 9780545562058