If you enjoy reading an interesting book that takes place in a creepy old stone citadel with many secret passages, threatening atmosphere, terrifying events and interesting characters...you will love this book. You will be forever squeamish if you ever see any gooey green mold. This is a great read for anyone who likes to step into unusual, well written stories that hold your interest from cover to cover.
Annie Snow

The best thing about this book is all the twists and turns and events that make you wonder what is going to happen next. By the end of the first few paragraphs I was more than ready to read the rest of The Gray Green Underground. There are non-stop surprises throughout the book. On top of that, the characters are so well developed I will never be able to forget them. Best of all is the ending. But I don't want to spoil the surprise.
Debra Ann Harvey
As I read this book, I almost felt like I had become Isabel, the main character, and that I went through everything she went through. It has such a sense of reality about it. It drew me in with one frightening thing after another. I can usually tell you how a novel will end, as well as being able to figure out who the person is, or the persons who are, guilty. Five stars for this one!
Kimberly Harris