Detective Matthew Venn is called in to investigate a puzzling death. The body of a young woman has been found in the swimming pool of Tide House, a luxurious holiday home in North Devon, and her best friend is missing. The property belongs to rising political star Paul Armstrong and the case quickly draws intense media scrutiny. As a scorching heat wave rages and further tragedy strikes, Venn and his team begin questioning a community brimming with secrets. The dead woman and her friend had been spotted at a nearby music festival the day before, an event which brought locals and outsiders together - some of whom may have been more connected with the Armstrongs than first thought. Caught between a powerful family’s secrets and a powder keg of local tensions, Venn must navigate a treacherous path. Knowing that the real answers lie not in what people say, but in the silence that they keep . . .