Good Bones - The Nearing Novels, #1

Death shouldn't be a matter of perspective. For Decan Delaney, it's finite, an ever-encroaching threat she already escaped once. Her parting gifts: a painful scar and a branded rib bone, connecting her to a wave of dark magic she doesn't understand.  But for occultists Jacek Lorde and Adler Raventhorpe, death is more of a suggestion. Over multiple lifetimes, they've shared love, magic, and a host of beautiful guests in their bed. When Decan brings the mysterious bone to Jacek and Adler, she doesn't expect to want them the way she does.
Doesn't expect their attraction to become something so captivating, so inescapable. Doesn't expect that she is the final thread weaving Jacek and Adler together with a darkness that has been hunting them across time. A darkness that binds them to Decan in ways they never could have imagined. And once the darkness finds them, there is no coming back.  If unleashed, it will tear them apart forever.