"You see, M. Poirot, I've never come across anything of the kind before. I was sent for, from the Lark Sisterhood, to go down to a case in Hertfordshire. An old gentleman, it is, Mr. Templeton. Quite a pleasant house, and quite pleasant people. The wife, Mrs. Templeton, is much younger than her husband, and he has a son by his first marriage who lives there. I don't know that the young man and the step-mother always get on together. He's not quite what you'd call normal—not 'wanting' exactly, but decidedly dull in the intellect. Well, this illness of Mr. Templeton's seemed to me from the first to be very mysterious. At times there seemed really nothing the matter with him, and then he suddenly has one of these gastric attacks with pain and vomiting. But the doctor seemed quite satisfied, a
