Fury of Conviction by Coreene Callahan

Chance brought them together in a world destined to tear them apart.

Caught between duty and honor, dragon-warrior Hamersveld is neck-deep in a dilemma. His commitment to the Razorback pack should take precedence, but when a new captive is brought into the lair, he’s forced to decide—risk everything to rescue a woman in desperate need of his help. Or stay loyal to the Razorback cause and keep his new home, along with his life.
Kidnapped by a rogue faction of Dragonkind, Natalie Bainbridge spends her days looking for ways to escape. Breaking out seems impossible until one of her captors offers her a trade—spend time with him in return for greater freedom inside his lair. With time ticking down, she enters the fray, playing a dangerous game with a man who makes no mistakes.
Will she buckle under the pressure? Or hold the line and break free for good?