Spiral of Need is a paranormal werewolf romance. Ally has been alienated from her pack because of a jealous mate of her ex. Dereen brings her to his own pack because of a favor he owes to her brother (well, he grew up with her and his family adopted her). 
 There are predictable crises with the jealous mate on Ally's side and another jealous woman on Dereen's side. Plus another jealous woman who is trying to wipe out her new pack. Every other chapter is another sexual encounter for no particular reason that I could see except to lengthen the story. 
 I like paranormal, but this one was not for me. I was given this book as an ARC by the publisher for an honest review.