Immortals: Three. Vampires: Zero.
Alyssa Day's Warriors of Poseidon series: A KNOCKOUT.
Poseidon's warriors swore an oath eleven thousand years ago to protect humanity from those who stalked the night. Yet when a woman with an ancient Gift dares to claim the heart of one of Poseidon's fiercest warriors, the world teeters on the knife's edge between desire and darkness.