But 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.Combining the exquisite plotting and gorgeous evocation of nature that have become his hallmark, with a wildly engrossing story of family, privilege, and childhood loss, Peter Heller gives us his finest work to date.