"What do they make of her reaction to his death? She struck me as pretty cool, when I saw her."
"How can one tell with that kind? The servants will have you think she hasn't turned a hair; but the doctor went to see her today, and was with her quite a while, so maybe she is more upset than she will show." He added: "It was Dr Westruther. He will maybe have mentioned it to you?"
"No, he didn't, because I didn't ask him. It doesn't surprise me, though - except that I didn't somehow take him for the sort of chap who trots round to call on his patients, with a little bag in his hand. Still, I daresay he makes her pay through the nose for a visit from him: he's got a very expensive decor to keep up, I can tell you."
"Again the doctor has turned up, Chief."
"They do. If you're thinking that it was him twisted that wire round the late Seaton-Carew's neck, let me tell you that he'd have a lot more classy ways of doing a chap in than that! No, the more I consider the facts, the more I think we'll go round to Charles Street, Sandy, and have a real heart-to-heart with Mrs. Haddington."
"You still think it was she?" the Inspector said curiously.
"I won't go as far as to say that: I don't know, but I think everything points to her."
"Seall, Chief, with what we have learnt this day, is it still Mrs. Haddington with you?" protested the Inspector. "It was motive you wanted, and which of them has the motive but Poulton?"
"I know," Hemingway replied. He pointed the pencil he was holding at the telephone on his desk. "That's what's sticking in my gullet, Sandy! Has been, from the start. It doesn't matter what we discover about anyone else: I keep on coming back to it."
"Because you have seen prints that are verra like Mrs. Haddington's, on an instrument she would naturally handle?"