Chasing Harmony by Sabrina Rue

Step into the world of the Others.
Harmony Kassis knows how to survive. No matter what life throws at her, no matter the odds. On the run for four years after the death of her father, she manages to evade capture that means certain death…or worse.
Until he joins the hunt. Faster, stronger than the others…she begins to doubt her ability to best him.
To Ryker Blackwell, his arranged marriage with Harmony is a way to advance his goals and expand his holdings. Following a horrific tragedy, his bond with her becomes personal. She’s on the run, alone and vulnerable, their mutual enemies in pursuit.
He will stop at nothing to catch her before they do.