At His Mercy (Forbidden Lovers)

For one night, Tristan Kelley taught the woman he knew only as Angel to surrender to all her wicked desires. Now his Angel has a name--Isabella Lawson--and he's not only her professor but her boss. Kisses are forbidden. Touches are forbidden. Nights with her are most definitely forbidden. Of course, he's never been one to play by the rules. When Isabella convinced her cousin to take her to her first kink party, she hadn't intended on meeting someone like Tristan--and she certainly hadn't intended on ever seeing him again. Now not only does she see him in class, she also shares a cramped office with him every afternoon...and it's becoming harder and harder to resist him. But as much as she wants to focus on her new feelings for Tristan Kelley, her dark past is coming for her and this time...she might not survive.