Savage City — Sophia McDougall

An explosion rips through the Colosseum, and as the smoke clears the world is changed forever. A new Emperor, spurred on by a riddling prophecy and armed with a devastating superweapon, stands ready to make his mark on history. Una, Sulien, and a desperate alliance of slaves, refugees and criminals, must resist the full power of the Roman Empire at its most ruthless, or lose everything they have fought for.