Undercover Fighter (Undergound Fighters #3)
Aislinn Kearns

Wyatt: Tough. Honorable. Secretive.
The man Wyatt used to be is gone. Now, his only focus is to find out what happened to his younger brother. His search led him to fight-organiser McCready’s door, but now he needs to gain the trust of a man he hates to get the information he needs…
Kat once lived a normal life—one she hopes she can return to one day. But that was before she traded her life for her sister’s, and spends her days and nights doing whatever McCready orders her to. She can’t risk her potential freedom, not even to help Wyatt, no matter how tempted she might be.
Then everything changes. Kat and Wyatt form an unlikely alliance against McCready. But McCready is not a man to be trifled with, and those that betray him have a tendency to end up dead…