When therapist Jill Davent moved to the village of Carsely, Agatha Raisin was not a fan. Not only was this therapist romancing Agatha's ex-husband but she dug up details of Agatha's not-too-glamorous origins. When Agatha learns that Jill had hired a private detective to investigate her background, she barges into Jill's office and gives her a piece of her mind, yelling ""I could kill you!"" So when Jill is found strangled to death in her office two days later, Agatha becomes the prime suspect. But Agatha, along with her team of private detectives, is determined to prove her innocence and find the real culprit.