Eternal Flames by Stacy Reid

Tehdra El kyn, a warrior elite of the shadow realm, has infiltrated the Nurian kingdom as a concubine for the merciless King Ajali, a man her demon has claimed as mate. Tehdra enters a court of deceit, political intrigue, and danger, where she tries to prevent the kings’ assassination without betraying her heart and her realm. Soon she finds that she must make terrifying choices which may result in her death or war for her kingdom.

King Ajali Haddin is powerful, cunning, and ruthless in protecting those he loves. With whispers of the realms plotting his death and the destruction of his kingdom, he uses Tehdra, a suspected spy to draw the enemy into combat. The last thing Ajali expected was to be captivated by Tehdra’s fierceness and her chilling beauty. Resisting her is the hardest battle he’s ever fought, but one he is determine to win. For to claim a woman as Tehdra means betraying his kingdom.