Detectives Ben Cooper and Diana Fry are complete opposites. Ben is emotional and impulsive, inclined to trust his feelings and insights. Diana is orderly and disciplined and prefers to act according to instructions. These two don't get along well. Nevertheless, they are partners who complement each other perfectly. That's why they are the best... Not far from a small town in Derbyshire, the daughter of one of the richest local residents was found dead. At first, no evidence, much less witnesses, could be found. However, Constable Ben Cooper, a local to the core, knows the area and the people living in it like the back of his hand and knows where and what to look for. Just at this time, he was given a new employee as a partner - Constable Diana Fry, talented, ambitious, and most importantly, with a fresh look. So two detectives began to investigate one of the most incredible crimes in the history of Derbyshire...