Dorothy Crowfoot Hodgkin (1919-1994) became an outstanding scientist in a period when it was harder than now for women to succeed in science. "with a list of honours including the Nobel prize, the Order of Merit, the Lenin Peace Prize- and the freedom of Beccles - she always gave her name as plain Dorothy Hodgkin,and insisted that the most junior of her colleagues call her simply Dorothy" It is not often that a work of scholarly biography makes the reader laugh aloud on page three without compromising the scholarship. Georgina Ferry manages to write mainly about the science, crystallography, that was Dorothy's life-long preoccupation without losing sight of the scientist herself. I am no crystallographer but the techniques and discoveries are so clearly described here that it is possible to share in the excitement of the discovery of the structure of Vitamin B12 and the frustrations in the persuit of the structure of insulin. Dorothy's marriage to Thomas Hodgkin and her life long relationship with Desmond Bernal are dealt with honesty and a sensitive understanding of what it might be like for a woman in a social circle where every one,the men at any rate, believed in free love. She does not gloss over the painful moments nor does she dwell on them with embarrassing prurience. Not only Dorothy but Thomas and Bernal emerge as convincing and likable characters. This book gives a much clearer and more sympathetic account of the political, scientific and social friendships of that group of left-wing British intellectuals than either Gary Werskey's Visible College or Maurice Goldsmith's biography Sage, which cover a similar area. The book is truthful at a scientific and a personal level . It is also very readable. Dorothy was always held up to me by my father as a shining example, " You can be a girl scientist like Dorothy Hodgkin" even at five I realised that was unlikely and was relieved to read that she hated to be called a "Role Model. None the less the book is a powerful inspiration to younger women scientists about what is possible.