Insatiable Breath of Darkness by Candice Stauffer

No one to trust. Nowhere to run. Hunted by Evolved, a group of demons hellbent on altering their DNA to dominate the world, Hanna Kinsley remains trapped in a hellish nightmare until the sudden arrival of an unexpected ally. Her lover. Her eternal mate. Whose presence provokes fear and awakens hunger too insatiable to deny. Surrendering to Adam’s dark desires will likely lead to disaster, but he proves to be a wicked temptation too hot to resist. All male. All sexy. All demon. He brings her body to extraordinary heights of pleasure, claiming she’s a miracle he’ll never relinquish, his miracle, an exquisite treasure he’ll protect with his last breath.

Adam Vlacic is a powerful and ruthless adversary with nothing to fear until his archenemy, Kazimir, joins forces with Evolved. It’ll take a miracle to protect Hanna, a dream he has never dared desire, a woman whose loss would end his existence. Surrounded by enemies, Adam is joined by Demetri Demidov, a demon who long ago lost Sara, his mate, to Evolved. They uncover the identity of the demon leading the group. It’s a shocking revelation with the power to save Hanna, Sara, and other innocent women or condemn them to cruel fates no mortal or immortal should ever endure.