“This is the vengeance which I had planned for you, Dr. Priestley. But, unfortunately, my plans have been thwarted. Long ago, when Dr. Morlandson was alive, he warned me that, well set up and healthy as I appeared to be, my heart was affected by organic disease. He told me frankly that it might be many years before it seriously affected my health, and that, with reasonable care, I might expect to attain the average term of years. But at the same time he warned me that my trouble might at any time become acute, and he described to me the symptoms which would be my signal to prepare for death.