Book #6

 Start with At Stars End. Astro-archeologist Niklas Phoenix loved his job studying artifacts at the Institute of Historical Preservation    until he learned that it was all a lie. Forced out of the Institute, he joins his treasure hunter brothers, but now the Institute is trying to    lure him back for the ultimate treasure hunt-a return to the planet that seeded life throughout the galaxy, Earth. Only one thing    convinces him to go-dangerous and enigmatic treasure hunter Nera Darcc. Nera escaped hell and has made a life for herself where    she bows to no one. Niklas Phoenix has become her dark obsession, and now on a perilous mission, they'll be working side by side.    She's built hard walls around her withered heart, but Niklas threatens to break them all down, and that's a risk she can't afford. The dangers of Earth strip away Nik and Nera's secrets and their simmering passion explodes. As a dark enemy closes in, they can only trust each other in a fierce battle for survival.