Towards Zero unfolds around the murder of an elderly widow at a clifftop seaside house, linking a failed suicide attempt, a schoolgirl wrongfully accused of theft, and the romantic life of a famous tennis player.
Explores the fictional story of Justine Pearce, a young sports prodigy, who enjoyed a meteoric rise in the world of Grand Slam Tennis, aided by her coach Glenn Lapthorn, with whom she shared an intense rapport.