Special Security Agent Sebastian Berlin is eager to track down his partner's killer. Instead, he's assigned the job of baby-sitting a scientist. His boss thinks she's the key to an Ancient Warrior Prophecy. Science never interested Sebastian, but the know-it-all female standing at the end of his Alaskan dock could persuade him to do a little experimenting. That is, if he can keep his Neanderthal Warrior genes from taking control. DNA specialist Lily Sinclair is in need of a vacation, or so her over-protective ex-husband tells her. Arriving in chilly Alaska instead of sunny Cancun, she's tired and cranky and so not in the mood for her bodyguard's he-man tactics. Still, there's something about the sexy eye-candy that makes her want to lick him all over even as she's demanding to go home. Then Lily's ex is poisoned, and Sebastian is certain the two murders are connected and she could be next. She knows he's hiding something, but with the worldwide release of Neanderthal DNA project only days away, she has no choice but to trust him to protect her. But can she trust him with her heart?