Elenor Williams and Jacob Matthew had been inseparable since middle school. Best friends. First love. Forever. Until forever ended on a quiet night filled with screeching tires. Two months after Jacob's death, a letter arrives on Elenor's birthday, written in his unmistakable handwriting. At first, she convinces herself it's something he prepared in advance. A final act of love. One last promise. But then a few months later, another letter comes. And another. Each one feels too aware. Too personal. Too present. They mention things no one else should know. They comfort her. They warn her. They remind her that promises were made the night Jacob died. As grief slowly turns into something far more unsettling, Elenor begins to question everything - the accident, the memories, and even the people she trusts the most. Because sometimes, missing someone isn't the scariest part. 'Sometimes, it's realizing they might never have left.'