Delivering Evil for Experts by Annette Marie

I promised to avenge my parents. But their killer is still on the loose, and he's stolen more than my parents' lives. Now, as he draws closer to his mysterious goals, he's poised to destroy what little I have left. I promised to translate an ancient grimoire. But it holds the secrets of my family--and the secret history of demon summoning. I fear its answers as much as I need them. Who was the foremother of Demonica...and who am I? I promised to send my demon home. But the way he watches me, the way he protects me, the way he touches me--how can I cast him away forever? I swore I would do this for him, but can I? Should I? But I promised--and I will keep my promises even if they cost me my heart, my soul, and my life.

Robin and Zylas’s time spent uncovering the mysteries of the ancient Demonica grimoire and Xavier’s true goals have forged a connection neither would have predicted. As they grow closer to their final showdown with Xavier, Robin begins to doubt her original promise to send Zylas home. But a promise is a promise, and despite how she feels Robin will keep her word. Together they will face off against Xavier and either die trying to stop him, or succeed and be torn apart.

As their time together grows ever shorter, Robin is faced with a choice. Either send Zylas home and never admit to how she feels, or risk telling him everything and breaking her heart when he leaves anyway. The power play between the two characters and the forbidden romance edge will take hold of readers and demand their attention.

But the romance angle remains a small part of Delivering Evil for Experts. The use of Demonica and different forms of magic amped up the action in this final novel. Robin and Zylas tear down boundaries and throw risks to the side as they go all out to defeat Xavier and his demon. Both sides will pull in allies to have a final showdown, and try to viciously tear each other apart. Pulling unexpected twists and turns with magic neither will see coming.

This final novel in The Guild Codex: Demonized will pull in events from the Spellbound series and put together missing pieces of character disappearances and reappearances. It will also give a wonderful amount of information on Zylas’ past and home. This was a great companion series to Spellbound that urban fantasy readers will love.