Obsidian Sins (Sin Santiago Book 1)

There are secrets so deep and dark that if revealed could mean the end for Sin Santiago. She lives a double life, hiding who she really is behind a carefully constructed facade.
She trusts only four people with her life, the vampire who saved her, the werewolf mob boss who hid her and the two wolves who guard her back.
Keeping her small pack of outcasts safe is her top priority, everything else can wait. But she is running out of time.
Her dead past is suddenly very much alive and bringing old hatreds to the fore. The darkness in her past haunts and threatens the life she has built, but she has had enough. The time has come to forever destroy the demons of her past before they destroyed the small pack she regards as her family.
If that’s not enough she has to contend with two Alpha males vying for her attention, and a covert military group watching her every move. Then there’s the fast approaching full moon, a full moon that could rip all semblance of control from her and reveal the vicious killer she hides inside.