The Debt by Sara Hubbard

After her father steals from a prominent crime family, Luna is abducted and forced to watch the Morozovas murder her father. She was supposed to be next. She was a witness, after all. But as Maxim Morozova brushed away Luna’s golden hair, looked past her fresh cuts and bruises, and stared into her topaz eyes, he saw something he didn’t expect to see—the angelic face of a nurse who’d saved his life two years before. The same nurse he briefly dated before she abruptly said good-bye.

Did he owe her a debt? He wasn’t sure. So, he would keep her until he decided what to do with her, while also doing his best not to let his old feelings reemerge. Hopefully, that voice inside of him, that always pushed him to do what was necessary, would convince him that she was a loose end that needed to be tied. And he wouldn’t have to worry about the consequences of letting her live.

But life doesn’t always work out the way you want it to, especially when you make the mistake of mixing business with pleasure.