The Recruit - Book 4 — Elizabeth Kelly

They thought they won the war… but the final battle is just beginning. A new weapon brings hope in the war against the vampire uprising. But this new weapon also creates discord among the recruits. As doubts rise and friendships are tested, Hannah must find a way to restore harmony. As the true leader of the vampire uprising emerges, a different and undetected threat grows within their midst. One that could change Hannah's life and the lives of those she loves, forever.