Detective Darnell died before he closed the case. Can his daughter solve it thirty years later? It was the murder that shocked the nation. Kate Rokesmith, a young mother, went to the river with her three-year-old son. She never came home. For three decades the case file has lain, unsolved, in the corner of an attic. Until the detective’s daughter Stella, a cleaner who loves restoring order, starts to clear out her father’s house after his death.