The Watchers: Half-blood Princess (Volume 1)

At the dawn of humanity, an select group of angels known as The Watchers were designated with the task of protecting mankind from the powers of darkness. But when members of this elite sect of angels go against their maker's rules and mate with human women, a new race of half-angel, half-man beings called the Nephilim are the result of this forbidden union. Terah Armer is one such half-blood offspring, but she is even more special still. Together, with her best friend and sorceress in training, Calypso, along with Alva, a seemingly simple human girl with no extraordinary abilities, Terah embarks on a quest that will put her in the cross-hairs of an ancient battle. The war between good and evil still rages on and in the midst of it all, not even her father's immortal blood can get in the way of her human heart's desire for love.