The Necromancer's Apprentice — Naomi Clark

Zombies. Black magic. Romance. Nobody said necromancy was easy. All Evanthe wants is to hone her necromancy skills and gain the affections of her reclusive mentor, Morrow. Just when she thinks he might reciprocate her feelings, a face from his past threatens the life Evanthe is working so hard for. Now she's up against rogue necromancers, smarmy demonologists, and blood-thirsty zombies as she and Morrow fight to protect a secret that could kill them both. Evanthe's a talented necromancer, but that might not be enough to guarantee her a happy ending.