This absorbing book is ballet's 'biography' -- a revealing examination of a closed world, its competition and camaraderie, sexual politics, intimacies, pressures and, not least of all, its magic. Ballet companies have endeavoured to hide what is going on backstage lest the reality of highly strung nerves, constant fatigue and pain from injuries tarnish the illusion of ethereal figures and seemingly weightless steps in polished performances. But the...