Detective duo Mrs Jameson and Marjorie Swallow are called to investigate when a renowned garden designer suspects that someone is sabotaging her priceless Himalayan Sapphire Lilies, ahead of the 1923 Chelsea Flower Show. But soon it's not just the flowers that are dying. Rival gardeners, intrepid plant hunters and even King George V himself are caught up in a poisonous bouquet with its roots deep in the mountains of Tibet. The third in the Marjorie Swallow 1920s murder mystery series requires all her wit, charm and pluck to solve.