Charlène is nineteen years old and in prison. Two years ago, on a September night, she killed Sarah, her school friend. Sarah was beautiful, brilliant, and had a magnetic personality that attracted everyone. Her friendship was a miraculous and unexpected gift of life for the shy Charlène. But small disappointments, expectations, and pain soon followed. The dramatic buildup of despair and passion, depicted with astonishing verisimilitude by a seventeen-year-old novelist.