Angel of Death (Saint Louisville Vampire Series Book 1)

Mika Shadow
The task at hand? Save the elder vampires from the plague of "the endless sleep." As a hired assassin, Mika Shadow knows not to let emotions get in the way. Given her skills and gifts, she's known as the Chosen One amongst her people. During her mission to steal the formula for anti-aging, and the elixir of life for the vampires, Mika finds herself facing the kidnappers who shattered her world as a young girl and abducted her from her mother. Her past comes roaring back to life! As she is dealing with those demons, Mika also finds herself falling for her target. She only has four strict rules for selecting a mission or dismissing it. The fourth and final one - No emotions allowed - falls flat the minute she meets Domonic.
Domonic Dagmar
The owner of a pharmaceutical company that was at one time invested in the magical serum Mika needs to savage her kind. Domonic is a notorious playboy as well. From the moment that he looked into her hypnotic gaze he knew he'd do whatever it would take to have her.