This book was not for me. Partly my fault. I should have taken the label "Dark" seriously. I just thought it was labeled that way because of the taboo of stepdad/stepdaughter relationship. I got to 68% and I just couldn't finish. This book is NOT safe, lots of triggers and the things happening were not sexy. 
 The first 35ish % of the book was good, a few small issues I would have overlooked but then a scene happened that completely ruined the story for me. I still trudged on but it was getting worse so I stopped reading. 
 I've read Dark books before and have enjoyed them but this one didn't work for me. I love the taboo of older man/younger woman tropes even the step dad/daughter scenario if their is no relations with the mom. In this case, there is no relationship with the mom. Their marriage is a business transaction, so that was safe but the book fell apart for me after that was revealed. 
 Now take out the dark parts and this book still wasn't working for me. I am a fan of a strong Alpha. The Alpha in this book was strong, but not. He was demanding of the h which I like, but he didn't stick to his decisions. He wanted her, then the next second he felt guilty and tried to make her leave. This kept happening! The same with the h. She said yes, then no because he was married to her mom, then back to yes again. I was getting whiplash from the constant back and forth. 
 The h is only 18 and some of the abuse happened to her when she was much younger. I just can't get past that. ARC provided by author.