Rule of the Earthborn - Primordial Series, #3

Rule of the Earthborn The clans simmer on the edge of war but Sambeth must persuade them to join forces and protect the last free people from the rule of the wicked angelic offspring. Although Sambeth has vowed to help Sem's people, they are hostile toward her, believing that she is one of the twisted Earthborn who will turn upon them suddenly and kill them all. The Fallen One sends his terrifying son to vanquish the leader of the people and take the city of Aresisia in one fell swoop.
Sambeth must find a way to stop him if humanity is to remain free but the Fallen One is the master of many machinations and the father of more than one menacing, angelic son.