Residents of the Peak District are used to tourists descending on its soaring hills and brooding valleys. However, this summer brings a different kind of visitor to the idyllic landscape, leaving behind bodies and secrets. A series of suicides throughout the Peaks throws Detective Inspector Ben Cooper and his Derbyshire E Division team into a race against time to find a connection to these seemingly random acts - with no way of predicting when the next body will turn up. Meanwhile in Nottingham, Detective Sergeant Diane Fry finds a key witness has vanished... But what are the mysterious secrets of these deaths?