The Obsidian Files Series by Shannon McKenna

Stranger, speak softly... Biotech tycoon Noah Gallagher has a deadly secret: his clandestine training as a super-soldier gives him abilities that go far beyond human. Yet he's very much a man. When Caro Bishop shows up at his Seattle headquarters with a dangerous secret agenda, his ordered life is thrown into chaos. Caro is a woman like no other—and her luminously sensual beauty cloaks a mystery he must solve. Caro's lying low, evading a false charge of murder... moreStranger, speak softly... Biotech tycoon Noah Gallagher has a deadly secret: his clandestine training as a super-soldier gives him abilities that go far beyond human. Yet he's very much a man. When Caro Bishop shows up at his Seattle headquarters with a dangerous secret agenda, his ordered life is thrown into chaos. Caro is a woman like no other—and her luminously sensual beauty cloaks a mystery he must solve. Caro's lying low, evading a false charge of murder. She means to clear her name, and she'll do whatever it takes to survive—but seducing a man like Noah is more than she bargained for. His amber eyes have the strangest glow when he looks at her—she could swear he sees the secrets of her heart. The desire smoldering in Noah's eyes awakens her own secret hunger, but Caro has to resist his magnetic pull. Anyone close to her becomes a target. The only right thing to do is run, far and fast, but Caro can't outrun Noah's ferocious intensity—or deny the searing passion that explodes between them. Nothing else matters—until a vicious enemy bent on the ultimate revenge puts his murderous plan into play. Noah and Caro must battle for their lives...and their love... less

Zade Ryan. Rebel supersoldier. Nearly superhuman. On a desperate quest to rescue his missing brother Luke by any means possible. To do it, he must seduce the elusive Simone Brightman, inventor of the ingenious and deadly tech used to capture Luke and hold him prisoner, location unknown. Zade will do whatever it takes to get close to Simone. Her mysterious beauty and highly sexual allure have him at a disadvantage, but time is running out ... Simone is fighting battles of her own, on her own... moreZade Ryan. Rebel supersoldier. Nearly superhuman. On a desperate quest to rescue his missing brother Luke by any means possible. To do it, he must seduce the elusive Simone Brightman, inventor of the ingenious and deadly tech used to capture Luke and hold him prisoner, location unknown. Zade will do whatever it takes to get close to Simone. Her mysterious beauty and highly sexual allure have him at a disadvantage, but time is running out ... Simone is fighting battles of her own, on her own. Until Zade—six foot four of sinewy muscle and lethal combat skills—rescues her from street thugs and leaves her breathless. His smoldering black eyes and overpowering sensuality—and his seductive invitation to spend one wild, unforgettable night with him—prove too tempting to resist. Their passionate encounter unleashes scorching desire that neither can control—leaving them vulnerable to their enemies who watch from the shadows and wait. And when they are lured into a trap by a monstrous killer hellbent on their destruction, they must fight with every weapon they have to save Luke, and each other. Because one night together could never be enough—and they might not live to have another ... less

Come back to me… Luke remembers a few things. Just not his last name, or anyone he ever knew. He knows that he’s a supersoldier, genetically enhanced and loaded up with brain implants. He just escaped from a year-long hell of captivity, and to protect his family and friends from his tormentors, he blocked his memories. Now he needs those memories back, fast…or he and those he loves will die agonizing deaths... moreCome back to me… Luke remembers a few things. Just not his last name, or anyone he ever knew. He knows that he’s a supersoldier, genetically enhanced and loaded up with brain implants. He just escaped from a year-long hell of captivity, and to protect his family and friends from his tormentors, he blocked his memories. Now he needs those memories back, fast…or he and those he loves will die agonizing deaths. Luke’s dangerous plan to reconnect with his past—and stay alive in the present—has drawn his enemies’ attention to the tough and sexy Dani LaSalle. He’s duty bound to protect the luscious beauty from the evil pursuing them, but he can’t control the scorching desire she awakens in him. Dani’s strict routine has been trashed by Luke’s explosive arrival. This rock-hard slab of valiant, smoldering manhood appears out of nowhere, saves her life, spirits her away to his mountain lair and bewilders her with tales of sadistic researchers, enhanced assassins. Is this gorgeous, problematic sex god just plain crazy—or is she? But Luke can do things with his mind that are just as wild as what he can do with that body…and she can’t say no. And there’s no time to wonder. As their passion burns hotter, Obsidian moves closer...and Luke and Dani must place their lives and their hearts on the line just to survive… less