The series revolves around a public relations expert, Agatha Raisin, who moves to a small village and tries to solve the mysteries behind a number of murders.
Agatha rents a cottage in a remote, quiet village, said to be inhabited by legendary fairies, before meeting a local woman who tries to prove that her wealthy husband is having an affair, but the husband ends up dead.
Agatha Raisin opens her detective agency, but the clients aren't eager to hire her. In search of new cases, Agatha and James visit Ivy Hall, rumored to be haunted since the English Civil War. A series of strange sounds and mysterious events turns the visit into a frightening experience.
Agatha is desperate for a quiet vacation, but a distress call from an old lady forces her to change her destination. Meanwhile, James returns to Carsely and promises Agatha a trip to help him write his new novel, but the vacation is turned upside down when a victim is found murdered in the hotel.