Rarely does one come across a book that is satisfying on so many levels. Written with painstaking scholarliness, this book is also a white-knuckled adventure story told with deep passion, and it pulls off the difficult trick of never allowing these two motives to clash. It also raises some important questions about the history and prehistory of the Indus Valley and associated areas that one hopes will not be ignored or thrust aside because of the popular appeal the book is no doubt destined to have.