Happily consumed with her academic career, Professor Avery Wainwright never planned on becoming sole guardian of her octogenarian Aunt Birdie. Forced to move Birdie - and her failing memory - into her tiny apartment, Avery's precariously balanced life loses its footing.Unearthed in the chaos is a stack of sixty-year-old letters. Written in 1951, the letters tell of a year Avery's grandmother, Alma Jean, spent teaching in the Indian school system, in the high desert town of Winslow, Arizona. The letters are addressed to Birdie, who was teaching at the Phoenix Indian School. The ghostly yet familiar voices in the letters tell of a dark time in her grandmother's life, a time no one has ever spoken of.Torn between caring for the old woman who cannot remember, and her very different memories of a grandmother no longer alive to explain, Avery searches for answers. But the scandal and loss she finds, the revelations about abuses, atrocities, and cover-ups at the Indian schools, threaten far more than she's bargained for.