Heart of the Dragon by Rachel Jonas

Even the deadliest dragon warrior has a weakness … his answers to the name Evangeline.
Liam suffered the loss of his mate once before, but with forbidden magic, Evie has returned to him. His reputation as “The Reaper” is one he earned … one kill at a time.
So, if there’s any warning his enemies should heed, it’s that he’ll stop at nothing to keep history from repeating itself; will stop at nothing to protect her.
Evie senses the walls rapidly closing in as her role in the revolution becomes clear—a movement in which the supernatural order has begun to shift. All who stand for the cause have made sacrifices, including Evie who’s faced several hard truths. The hardest lesson being one that brought loyalty into question—a single, careless act at the hands of someone she trusted.
Someone who nearly cost her everything.
Nick never wanted any of this. As he struggles to understand the nature of his dual identities, he’s haunted by the pain and destruction he’s caused as his dark side gains strength. Escaping his cell and running was the only option, but that doesn’t mean he’ll escape the repercussions.
No one’s out of the woods yet. The line between enemies and allies blurs for the Seaton Falls clan amidst rising tension, rumors of a traitor among them … and the arrival of an uninvited guest.