A Lamia, a sea creature worthy of John Keats' prose, teams up with a vampire with serial tendencies. When young promising artists are found dead, the Preternatural Bureau sends Cassandra Hayes to the Hamptons to help a fellow hunter track down this lethal duo. She's only spoken to Mr. Green once on the phone and when she meets him in person, he is not what she expects. His hunting skills are spot on, but there is something the man is hiding, and she's determined to find out what it is despite the attraction developing between them.
Tremayne Graystone, a vampire from one of the oldest septs, is not pleased when he finds a dead hunter left on the doorstep of his pub. He should have never answered the hunter's phone, but someone is trying to frame him and he wants answers. Surely he can masquerade as Mr. Green, the hunter Cassandra is supposed to meet, before she figures out his true identity and stakes him. She's a Hayes, from a long line of vampire hunters, and fraternizing with the enemy is simply not done, but as they work together and follow the clues, the lines become blurred when he falls for the hunter's charms.