Inherited Damnation Series by Claire Ashgrove

One of eight children born to an ancient Celtic priestess and sired by a demonic incubus, Cian McLaine suffers from a centuries-old curse. Though his immortality allows him to enjoy the pleasures of mortal life, he is plagued by the desire to kill. As long as he doesn't fall in love he can keep the compulsion at bay. When Cian walked into her rare bookstore months ago, Miranda Phillips never imagined she'd lose her heart to the handsome playboy. Her reward for doing so was abandonment... moreOne of eight children born to an ancient Celtic priestess and sired by a demonic incubus, Cian McLaine suffers from a centuries-old curse. Though his immortality allows him to enjoy the pleasures of mortal life, he is plagued by the desire to kill. As long as he doesn't fall in love he can keep the compulsion at bay. When Cian walked into her rare bookstore months ago, Miranda Phillips never imagined she'd lose her heart to the handsome playboy. Her reward for doing so was abandonment. Cian left as mysteriously as he appeared, in the middle of the night with no explanation, no goodbye. Now he's back, and passion flares just as hot. But Cian has secrets. If Miranda is to survive, she must uncover the truth and free his darkened soul. less

Cursed by her incubus father centuries ago, the last thing Rhiannon McLaine wants is to fall in love. The night she delivers flowers to detective Mick Farrell, however, everything changes. Deep-seated attraction flares into untamed passion. In the morning, Rhiannon awakens to find she’s lost her heart. Now, unless she can convince Mick of her secret past, she’s destined to take his life. When Rhiannon asks Mick to go camping with her, instinct warns him to refuse... moreCursed by her incubus father centuries ago, the last thing Rhiannon McLaine wants is to fall in love. The night she delivers flowers to detective Mick Farrell, however, everything changes. Deep-seated attraction flares into untamed passion. In the morning, Rhiannon awakens to find she’s lost her heart. Now, unless she can convince Mick of her secret past, she’s destined to take his life. When Rhiannon asks Mick to go camping with her, instinct warns him to refuse. Though he hungers for her love and the goodness she represents, he’ll do anything to keep her from discovering the darkness within his soul. Yet a weekend in the woods is the perfect place to indulge in temporary desire…until he finds himself bound against his will. Surrounded by ancient Celtic rites and magic, can Mick see beyond Rhiannon’s duplicity and recognize her love? Or will the revelation of her true demonic nature doom Rhiannon to a mortal life alone? less