At first, he talked about the flowers in the garden behind his country house in Surrey. His voice still had its Midlands accent but was soft now and barely audible. He knew the plants by name and took a few minutes with each of them: ageratum, coreopsis, echinacea, rudbeckia. The yarrow, he said, had rose-red flowers on two-foot stems. Achillea millefolium, the plant Achilles used to heal wounds.