“My fiancée, like myself, took a keen interest in the case—partly because it was my case and partly because she was herself greatly interested in the disease. She looks forward to being of great assistance to me in my life work if I ever get the chance to do anything at it. But that’s by the way.
“Things went on like this till September. Then, for some reason, the patient began to take one of those unaccountable dislikes that feeble-minded patients do take sometimes. She got it into her head that the nurse wanted to kill her—the same idea she’d had about the lawyer, you see—and earnestly assured her niece that she was being poisoned. No doubt she attributed her attacks of pain to this cause. Reasoning was useless—she cried out and refused to let the nurse come near her. When that happens, naturally, there’s nothing for it but to get rid of the nurse, as she can do the patient no possible good. I sent my fiancée back to town and wired to Sir Warburton’s Clinic to send me down another nurse.
“The new nurse arrived the next day. Naturally, after the other, she was a second-best as far as I was concerned, but she seemed quite up to her work and the patient made no objection. However, now I began to have trouble with the niece. Poor girl, all this long-drawn-out business was getting on her nerves, I suppose. She took it into her head that her aunt was very much worse. I said that of course she must gradually get worse, but that she was putting up a wonderful fight and there was no cause for alarm. The girl wasn’t satisfied, however, and on one occasion early in November sent for me hurriedly in the middle of the night because her aunt was dying.
“When I arrived, I found the patient in great pain, certainly, but in no immediate danger. I told the nurse to give her a morphia injection, and administered a dose of bromide to the girl, telling her to go to bed and not to do any nursing for the next few days. The following day I overhauled the patient very carefully and found that she was doing even better than I supposed. Her heart was exceptionally strong and steady, she was taking nourishment remarkably well and the progress of the disease was temporarily arrested.
“The niece apologised for her agitation, and said she really thought her aunt was going. I said that, on the contrary, I could now affirm positively that she would live for another five or six months. As you know, in cases like hers, one can speak with very fair certainty.
“‘In any case,’ I said, ‘I shouldn’t distress yourself too much. Death, when it does come, will be a release from suffering.’
“‘Yes,’ she said, ‘poor Auntie. I’m afraid I’m selfish, but she’s the only relative I have left in the world.’
“Three days later, I was just sitting down to dinner when a telephone message came. Would I go over at once? The patient was dead.”
“Good gracious!” cried Charles, “it’s perfectly obvious—”
“Shut up, Sherlock,” said his friend, “the doctor’s story is not going to be obvious. Far from it, as the private said when he aimed at the bull’s-eye and hit the gunnery instructor. But I observe the waiter hovering uneasily about us while his colleagues pile up chairs and carry away the cruets. Will you not come and finish the story in my flat? I can give you a glass of very decent port. You will? Good. Waiter, call a taxi . . . 110A Piccadilly.”