Following the example of a professor who always finds really interesting nonfiction books in the Rice University library, and who checked this book back in, I just read Shapeshifters by Gavin Francis MD. I’m glad I did. This book is an expertly guided tour of how the human body is fundamentally changeable through both natural development and different diseases. Dr. Francis tells these medical tales with fascination, compassion, and strong, clear, evocative writing. This is highly recommended reading for writers of science fiction, fantasy and mystery – there’s so much good material here!