He had little memory of who he was or where he'd been, but the images that kept flashing through his mind meant computer genius Claudia Reynolds was headed for danger and only Jack Maddox could rescue her. Although they'd technically met before, it wasn't until the bullets started to fly that the blond beauty was convinced to follow him through the remote South Dakota woods…far from the mysterious facility that Jack had once called home. Now, as Jack sensed they were closing in on answers too many people had died covering up, the long-forgotten pain buried deep in his past proved their connection was the only thing he could rely on. And the only thing keeping Claudia alive.

It had been five years since he'd last laid eyes on Shelley Young, but Colorado rancher Matt Whitlock would never forget the moment she'd left his ranch without a backward glance. Now, with fear for his son's safety lying heavily in his heart, working together quickly became like old times—as did the rekindling of an attraction that had never really been extinguished. Following leads deep into the snowy mountains of South Dakota, Matt knew it was time to reveal the truth about his past…and its connection to bringing the little boy home.

Test Subject: Drew KincaidAbility: Self-healing Weakness: Melinda Winston and the baby she's carrying. "His" baby Drew Kincaid had always been in someone's crosshairs, and once again it was time to move on before his elusive tracker got too close. Only this time, he'd be leaving behind Melinda Winston. From the moment they met, Drew and Melinda shared a connection he'd never thought possible, thanks to his extraordinary - and secret - ability to self-heal. Now, with a baby on the way, Melinda needed protection, not a man trying to stay one step ahead. But after barely rescuing her from the hands of his enemies, Drew was ready to admit to his troubled past and its effect on their future. He knew self-healing was a powerful gift...but the damage would be irreparable if he lost Melinda and his baby.

Test Subject: Jared Maddox Ability: Mental telepathy Weakness: Willa Tyler, the only person he was able to communicate with while in a coma. From the moment he came out of a coma, Jared Maddox knew his whereabouts had been compromised and that only one person could help him escape: trauma nurse Willa Tyler. Although he was reluctant to put Willa's life in danger, she refused to abandon him, insisting she help him reconnect with his mysterious past...and his identical twin. Using the abilities some saw as a gift, Jared sensed the moment they closed in on the truth. And the moment he started considering a future with the strong and beautiful woman who'd faithfully stood by his side. But was her healing touch enough to weather what they uncovered deep in the mountains?