Zirkov by Julie K. Cohen

What happens when the traitor you’ve been hunting is the woman you’re destined to mate?

Maggie
Earth’s invaders are gone, but not the og’dal slavers. And they have their hooks in Maggie, pitting her against the alien marshals she admires. She has the marshals fooled, except the one in charge. Zirkov. He doesn’t trust her. He’s bullheaded, distant, and infuriating. And yet he may be the only one who can save her from the web of lies she’s spun.

Zirkov
All the evidence points to Maggie, but that’s not the only thing pointing to the human marshal. His mating c*ck has risen for her. He can’t deny the facts, professional and personal. Now he must put everything he has and is on the line for the woman who despises him.