The Quiche of Death (1992) is the first Agatha Raisin mystery novel by Marion Chesney under her pseudonym M. C. Beaton.
Agatha Raisin retires from her profitable position as a PR agent in London and moves to the Cotswolds, expecting a peaceful country life. She enters a local baking contest with a quiche she bought in London; not only does she not win, but her quiche kills one of the judges. Desperate to prove her innocence, Agatha begins investigating the crime herself.