After walking into a trap on a covert op in Russia, the men from top secret SEAL Team Nine are presumed dead. Not knowing whom they can trust, and with war hanging in the balance, the survivors must go dark and scatter around the globe. Marine ecologist Annie Henderson joins her new boyfriend on a trip to the Western Isles of Scotland to protest a hazardous offshore drilling venture. When she realizes that she may be swept up in something far more dangerous than she'd intended, there is only one man she can turn to... She and the mysterious but sexy dive boat captain haven't exactly gotten off to the best start, but something about his quiet confidence makes her think that he's the kind of man she can depend on. Because he's gruff and guarded, she can tell Dan Warren has secrets. But she could never imagine how high the stakes are for him to keep his cover, even as he risks everything to protect her...