This one was still good, a little darker than any of the others as the omega escaped from sex trafficking right at the start, and then is claimed by one of the alphas in the pack accidentally/without prior discussion/etc. Serena agrees to stay with them only to stay away from the man who had her trapped before, and is drawn to all four men but two in particular. Avery is a newly pro MMA fighter and Jonah is a pro NFL player (same team as the guys in book1), and she feels safer around them pretty quickly, and later Spencer, professor and brother of their pack leader Tristan, whom Serena has the half bond with. Tristan can feel her emotions and stays away because of how fearful she is, and out of guilt, even though it physically causes him pain. Avery is definitely closer to morally grey than any other characters in this series, which also adds to the different tension. I still enjoyed it, and though there are still no new MCs with a happy immediate family, there's a reveal later on that brings potential for that to happen. Since I've read book4, I'll now have to wait for book5 to come out later in June. So far, I think book4 is my fave, flowed by book2.