Enemy Mine - Karin Harlow

Lovers from opposite worlds reunite in Karin Harlow's explosive, erotic new L.O.S.T. adventure. . . .
While tracking a hijacked cask of enriched uranium in Kyrgyzstan, L.O.S.T. operative Nikko Cruz is ambushed and left for dead. Which means he must be hallucinating when the only woman he ever loved--the woman he was sentenced to death for killing--comes to his rescue. Half-daemon Selena Guererro has secrets she'd kill for. The most important one, she's already died to protect. Now she'll do anything to keep her daughter safe. But she can't just leave her lost love to perish. She injects Nikko with immortal blood serum, putting herself in grave danger.
When Nikko comes to, he is superhuman and super pissed. The mother of his daughter--the one he thought killed their child--is alive. He wants answers. He wants blood. And despite his best intentions, he wants Selena. He traces her to a mysterious terrorist cell where the cask has surfaced. First, he must retrieve the deadly material. Then he'll take revenge on his beautiful ex. But when nothing goes as planned, Nikko and Selena find themselves burning with desire . . . and blowing the roof off their separate worlds, human and daemon alike.