I threw my neck out in the middle of Swan Lake last night. So begins the tale of Kate Crane, a soloist in a celebrated New York City ballet company who is struggling to keep her place in a very demanding world. At every turn she is haunted by her close relationship with her younger sister, Gwen, a fellow company dancer whose career quickly surpassed Kate's, but who has recently suffered a breakdown and returned home. Alone for the first time in her...