Vision, more than any other sense, dominates our mental life. Our visual experience is just so rich, so detailed, that we can hardly distinguish that experience from the world itself. Even when we just think about the world and don't look at it directly, we can't help but 'imagine' what itlooks like. We think of 'seeing' as being a conscious activity - we direct our eyes, we choose what we look at, we register what we are seeing. The series of events described in this book radically altered this attitute towards vision.This book describes one of the most extraordinary neurological cases of recent years - one that profoundly changed scientific views on consciousness. It is the story of Dee Fletcher - a woman who was virtually blind. Dee became the subject of a series of scientific studies. As events unfolded, itbecame apparent that Dee wasn't in fact blind - she just didn't know that she could see. Taking us on a journey into the unconscious brain, the two scientists who witnessed these incredible discoveries tell the amazing story of their work, and the surprising conclusion they were forced to reach.Written to be accessible to students and popular science readers, this book is a fascinating illustration of the power of the 'unconscious' mind.