The Billionaire's Approval: A Billionaire Romance. Arsen's Rules, #2

Arsen had Steele nearly where he wanted her. She found herself interested in his dark desires and he thought she might be a viable candidate as his submissive mistress. After testing the waters a bit with her, Arsen was impressed with how well she reacted to his strict ways. The only drawback was the authorities were beginning to hammer him with questions and he had to answer things he'd rather Steele not know about him at that time, or ever.
Steele found herself thinking about how much it was possible Arsen did kill the women he was so close to being formally accused of. It began to bother her how much Arsen was pressing her to prove she trusted him explicitly.