In the heart of the Beast

This book is not at all a stand-alone book. You have to read the previous book which is 'A bond with the Beast'.

This book is the continuation of the previous book from chapter 64.

I won't give any description of this book as I believe that you have already read the previous book and you must be knowing about the story and characters as well.

So, proceed ahead only if you have read the previous book.

The cover credit goes to @The_angel_community .