the old lady was glade to be back at the block of flats where she lived. Her shopping had tired her and basket had grown heavier with every step of the way home. In the lift her thoughts were on lunch and a good rest ;but when she got out at her own floor,both were forgotten in her sudden discovery that her front door was open.She was thinking that she must reprimand her daily maid the next morning for such monstrous piece negligence ,when she remembered that she had gone shopping after the maid had left and she knew that she had turned both keys in their lock.