If you know somebody who is a victim of spousal abuse, I highly recommend this book. It was immeasurably helpful in my experience.
Many of the reviews I have read for other examples of this type of book have been from social workers or instructors of some kind. I'm just a regular person. One day someone very close to me opened up about the spousal abuse she had endured for many years. I was the first person she had ever told. A year passed and I thought I was helping her, but her situation and her outlook, her actions and her excuses would barely change, or go completely backwards.
After finding this book by chance, reading it changed everything. I gained an understanding of how many of the predictable things I had done to "help" her would never help. Reading this book improved my understanding of her situation and my understanding of my own reactions. I took the author's advice and changed my behaviour accordingly. Every situation is going to be different, but within a couple months my friend was making dramatic advances.
She completely hid her situation for over a decade, but now she is getting professional help. She gives me a great deal of credit for helping her get herself out of the cycle she was in, but I credit this book. Reading this book was absolutely vital in my knowing how to act and react, and to really help her help herself. I would like to thank the author very much.