The peace of a small West Country village is rudely shattered when a bomb explodes in the local supermarket. Karen Slocombe, a member of the Food Chain Group and staunch supporter of local produce, would not normally care for the loss of a supermarket, but she does take offence to such violence and that fact that she and her daughter were very nearly caught up in the explosion. When, a few days later, Karen witnesses the horrifying murder of an adjacent stallholder at the local farmer's market, she begins to wonder just who is committing these seemingly motiveless crimes and why does she keep finding herself in the middle of the crime scene?