In her day job as a nurse, Sandy Holston cares for the elderly and the sick, even as she is haunted by her own questionable past and the deaths that marked it. Her true self resides among the mountain trout streams of her Appalachian home, where she wields her fly rod with uncanny accuracy as her life plays out along a tight line between herself and a fish on the other end. But then the Ripshin River threatens to flood. Sandy can no longer deny that dementia has taken hold in James Keefe, her...