Heart of Atlantis (Warriors of Poseidon #8)

As a war wages between the immortals of Atlantis and those of the vampire realm, a Poseidon warrior fights to save his world—and the woman he loves. And no risk is too great.

The desires of a high priest.
Alaric, Poseidon’s High Priest, has made a vow to Quinn, the woman he loves and the leader of the Resistance: to save her friend Jack before his last bit of humanity has been drained. Should Alaric succeed, there’s one intimate danger: he may lose Quinn to the love of the man whose life he saved. But damn Atlantis to the nine hells, he’s willing to put Quinn’s wishes first, regardless of the consequences.

The warning of a threat reborn.
The final jewel of Poseidon’s trident has turned up in the hands of mysterious Ptolemy Reborn, who claims to be descended from Atlantean royalty. He’s about to reveal to the world that Atlantis is real, positioning himself as king. But this magical terrorist is bent on chaos. The only warrior who can stop him is following his own path, driven by the even more powerful force of love. Atlantean powers over the sea could prove just as cataclysmic—for Quinn’s love, Alaric might drown the entire world. Rated '3/5 - Open door' for steam/spice/heat level.