What the River Keeps by Cheryl Grey Bostrom is a 2025 Christian fiction novel about Hildy Nybo, a biologist who returns to her childhood home on Washington's Elwha River to help with its restoration, forcing her to confront a past filled with family secrets, trauma, and memory loss. The story follows her journey of healing, forgiveness, and self-discovery as she navigates her reclusive life, her mother's dementia, and a budding romance with a local carpenter, Luke. The novel blends themes of nature, science, faith, and redemption, set against the backdrop of the Pacific Northwest.