New York: Alfred A. Knopf, 2017. First edition - A novel inspired by the life of Heller's mother, an iconoclastic private eye, this is the story of a woman who has made a career of tracking down missing persons. "When a young woman, Gabriela, asks for her help, a world of mystery and sorrow opens up. Gabriela's father was a photographer who went missing on the border of Montana and Wyoming. He was assumed to have died from a grizzly mauling, but his body was never found. Now, as Celine and her partner head to Yellowstone National Park, investigating a trail gone cold, it becomes clear that they are being followed--that this is a case someone desperately wants to keep closed." 334 pp.