The Codex of Shadows (The Fire Mage Chronicles) by Tiffani Skye

I’m an assassin, not a treasure hunter. But when the Master Vampire of New Orleans offers a contract I can’t refuse, I’m forced to hunt down a stolen grimoire powerful enough to unleash Hades from the Underworld. Find the book. Stop the ritual. Simple. Except nothing about this job is easy, especially working with the Master Vampire who hired me. A vampire who is equal parts lethal, arrogant, and far too good at getting under my skin. Working together should be temporary. Professional. But as enemies close in and the truth behind the grimoire unravels, the line between ally and temptation becomes dangerously thin. Because stopping Hades might require the one thing I’ve spent my entire life hiding: Read more