Lord Bellington has enraged locals by saying he is going to sell off their allotments to make way for a new housing development. So when he turns up dead, poisoned by antifreeze, nobody mourns his passing. Agatha visits Carsley's allotments where everything looks peaceful. She is introduced to three keen gardeners who lament the neglected condition of a patch that has become available. But as one gardener shovels through the weeds, his spade comes across something hard so he bends down and tries to move the object. And he starts to yell... Far from being tiny gardens of Eden, the allotments are local battlefields...with bodies piling up!