Police crime drama exploring the personal and professional lives of two female detectives. Detective Constable Rachel Bailey is 30, down-to-earth, noisy, argumentative and single. Her partner, Detective Constable Janet Scott, is 40, a diplomat and a thinker, as well as being a wife and mother. They both work for Manchester Metropolitan Police's prestigious Murder Investigation Team and, despite the obvious differences between them, the fact that they are often thrown together in difficult situations means they have developed a robust friendship.