Jewel of Atlantis (Atlantis, Book 2)

Jewel of Atlantis (Atlantis, Book 2) by Showalter, Gena. mass_market edition. ISBN: 9780373770960.

All Atlantis seeks the Jewel of Dunamis, which legend claims can overcome any enemy. Grayson James, human agent of the ultra-secret Otherworld Bureau of Investigation, has orders to keep it from the wrong hands--or destroy it. What he doesn't know is that Jewel is a woman, not a stone! But once he meets this precious gem, destroying her is the last thing on his mind...Jewel, part goddess, part prophet, is a pawn in Atlantis's constant power struggles. She needs Gray's help to win freedom and uncover the secrets of her mysterious origins. Gray needs her wisdom to navigate monster-ridden Atlantis. But need blossoms into passionate love as they fight demons, dragons, vampires--and a prophecy that says the bond between them could destroy them both.