When therapist Jill Davent moves into the village of Carsely, Agatha Raisin is not a fan. Not only is the therapist romancing her ex-husband James but she digs up details of Agatha's rather unsavoury origins. Furthermore, Jill is counselling a woman Agatha is convinced is a murderess - although she has no actual proof. Agatha tells anyone who cares to listen that Jill is a charlatan. So she can only sigh with relief when Jill takes offices in the nearby town of Mircester. But then Jill is found strangled to death in her office two days later and Agatha is the prime suspect!