The Oath — Christopher Frost

Nikolas Troy wishes to leave his life behind after discovering the infidelity of his lifelong love, Kristen Ashmore. In a back alley, in the city of Black Harbor, Nikolas gives away his soul in one deadly bite. Born again as a vampire, he leaves his old life behind and swears to never return again. Years later, when Nikolas learns of the grisly murder of his beloved Kristen's little sister, Megan, he is faced with a choice. Will he return to the life he left in order to honor the oath of protection he had made so many years ago, or follow to the promise he has sworn to his vampire masters? In a race against time, with the Elder vampire of the Deatante clan at his heels, Nikolas must try to solve the murder of Megan, suppress his feelings for Kristen before his love leads to her ultimate death, and remain in the shadows.