As winter closes its grip on snow-bound London, a cleaner determines to solve the case that her detective father never could. A Kindle number one bestseller. It was the murder that shocked the nation.

Kate Rokesmith, a young mother, walked to the banks of the Thames 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 Darnell, starts to clear out her father's house after his death...