Last Man to Survive by Lisa Phillips

The fight is all they know.

Police Detective Hannah Yassick watched her entire life flip upside down in the last few months. Now she has a half-sister she never knew, and a mother who is a stranger. Working undercover is way better than wallowing at home. She has no idea who she is, so why not be someone else entirely? Space and time might be what Hannah is looking for, but life never gives her what she wants.
This Chevalier team member walked away from who he was years ago. Joining the army gained Badger a name and the family he was denied. Being part of the team now means he’s surrounded by people who care about him. But they have no idea who he really is, and they can never find out.
When Badger is tasked with protecting Hannah the worst parts of their pasts come calling. The two must fight through their differences to realize they understand each other on a level no one else ever will. It’s a perfect match…if they can stay alive long enough to get to their happily ever after.