Agatha Raisin, a public relations professional, gives up her life in London in the hope of starting a new life in the seemingly quiet village of Carsley, but soon finds herself a suspect in a murder case when she enters the village's annual quiche-making competition in an attempt to ingratiate herself with the community. She sets out to clear her name and solve the mystery of the quiche of death.

Agatha springs into action when James's girlfriend Mary is found dead shortly before the village gardening competition.

The Murderous Marriage: When Agatha's first husband is found dead in a ditch the day after stopping her wedding to James, she must race to prove her innocence.