Shadowfever

MacKayla Lane was just a child when she and her sister, Alina, were given up for adoption and banished from Ireland forever. Twenty years later, Alina is dead and Mac has returned to Ireland to hunt her sister's murderer. But after discovering that she descends from a bloodline that is both gifted and cursed, Mac is plunged into a secret history: an ancient conflict between humans and immortals who have lived concealed among us for thousands of y...