
At quarter past three one April afternoon, Lucy Mackenzie had picked up her six-year-old daughter from school, and the mother’s body had been pulled out of the river at seven thirty by a jogger. The daughter had never been found, despite the dredging of the canal and the most expensive missing person investigation that Catharine had ever instigated. The last sighting of her had been by her teacher when the child had been picked up from school. The police investigation had circled for eighteen months, unable to reconstruct a mere four hours.