The False Prince (the Ascendance Series, Book 1)

The thrilling first book in a brand-new trilogy filled with danger, deceit, and hidden identities. Sage, an orphaned thief, is one of four boys chosen to participate in a lethal contest. After being plucked from the streets by a nobleman named Connor, Sage learns that Connor plans to choose one of the orphans to impersonate a long-lost prince in the hopes of averting a civil war.