Mrs McGinty's Dead by Agatha Christie

I turned the handle and I went in. The whole place messed about - and the board in the floor up. 'It's robbery,' I said. 'But where's the poor soul herself?' And then we thought to look in the sitting-room. And there she was... Down on the floor with her poor head stove in. Murder! I saw at once what it was - murder! Couldn't be anything else! Robbery and murder! Here in Broadhinny. I screamed and I screamed! Quite a job they had with me. Came over all faint, I did. They had to go and get me brandy from the Three Ducks. And even then I was all of a shiver for hours and hours. 'Don't you take on so, mother,' that's what the sergeant said to me when he came. 'Don't you take on so. You go home and make yourself a nice cup of tea.' And so I did. And when Elliot came home, 'Why, whatever's happened?' he says, staring at me. Still all of a tremble I was. Always was sensitive from a child.”
    Poirot dexterously interrupted this thrilling personal narrative.
    “Yes, yes, one can see that. And when was the last time you had seen poor Mrs McGinty?”
    “Must have been the day before, when she'd stepped out into the back garden to pick a bit of mint. I was just feeding the chickens.”
    “Did she say anything to you?”
    “Just good afternoon and were they laying any better.”
    “And that's the last time you saw her? You didn't see her on the day she died?”
    “No. I saw him though.” Mrs Elliot lowered her voice. “About eleven o'clock in the morning. Just walking along the road. Shuffling his feet the way he always did.”
    Poirot waited, but it seemed that there was nothing to add.
    He asked:
    “Were you surprised when the police arrested him?”
    “Well, I was and I wasn't. Mind you, I'd always thought he was a bit daft. And no doubt about it, these daft ones do turn nasty, sometimes. My uncle had a feeble-minded boy, and he could go very nasty sometimes - as he grew up, that was. Didn't know his strength. Yes, that Bentley was daft all right, and I shouldn't be surprised if they don't hang him when it comes to it, but sends him to the asylum instead. Why, look at the place he hid the money. No one would hide money in a place like that unless he wanted it to be found. Just silly and simple like, that's what he was.”
    “Unless he wanted it found,” murmured Poirot. “You did not, by any chance, miss a chopper - or an axe?”
    “No, sir, I did not. The police asked me that. Asked all of us in the cottages here. It's a mystery still what he killed her with.”

Mrs McGinty's Dead
    III
    Hercule Poirot walked towards the post office.
    The murderer had wanted the money found, but he had not wanted the weapon to be found. For the money would point to James Bentley and the weapon would point to - whom?
    He shook his head. He had visited the other two cottages. They had been less exuberant than Mrs Kiddle and less dramatic than Mrs Elliot. They had said in effect that Mrs McGinty was a very respectable woman who kept herself to herself, that she had a niece over at Cullavon, that nobody but the said niece ever came to see her, that nobody, so far as they knew, disliked her or bore a grudge against her, that was it true that there was a petition being got up for James Bentley and would they be asked to sign it?
    “I get nowhere - nowhere,” said Poirot to himself. “There is nothing - no little gleam. I can well understand the despair of Superintendent Spence. But it should be different for me. Superintendent Spence, he is a very good and painstaking police officer, but me, I am Hercule Poirot. For me, there should be illumination!”
    One of his patent leather shoes slopped into a puddle and he winced.
    He was the great, the unique Hercule Poirot, but he was also a very old man and his shoes were tight.
    He entered the post office.
    The right-hand side was given to the business of His Majesty's mails. The left-hand side displayed a rich assortment of varied merchandise, comprising sweets, groceries, toys, hardware,