Heather Brewer 
Slayer Chronicles: First Kill [EPUB ebook] 
First Kill

LIFE IS KILLER ON THE OTHER SIDE OF THE STAKE.JOSS MCMILLAN’S perfect life crashes down the night he witnesses his sister’s murder — at the hands of a vampire. He then finds out his family’s secret heritage: They are part of the Slayer Society, a group whose mission is to rid the world of vampires. Joss is their new recruit. As Joss trains, bent on seeking revenge for his sister, he discovers powers that could make him the youngest, strongest Slayer in history. But there is a traitor in the Society, one whose identity would shake Joss to the core . . . if the traitor doesn’t kill him first.