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the open window
by h. h. munro (saki)
"my aunt will be down presently, mr. nuttel," said a very self-possessed young lady of fifteen; "in the meantime you must try and put up with me."
framton nuttel endeavored to say the correct something which should duly flatter the niece of the moment without unduly discounting the aunt that was to come. privately he doubted more than ever whether these formal visits on a succession of total strangers would do much towards the nerve cure which he was supposed to be undergoing.
"i know how it will be," his sister had said when he was preparing to migrate to this rural retreat; "you will bury yourself down there and not speak to a living soul, and your nerves will be worse than ever from moping. i shall just give you letters of introduction to all the people i know there. some of them, as far as i can remember, were quite nice."
framton wondered whether mrs. sappleton, the lady to whom he was presenting one of the letters of introduction, came into the nice division.
"do you know many of the people round here? " asked the niece, when she judged that they had had sufficient silent communion.
"hardly a soul," said framton. "my sister was staying here, at the rectory, you know, some four years ago, and she gave me letters of introduction to some of the people here."
he made the last statement in a tone of distinct regret.
"then you know practically nothing about my aunt? " pursued the self-possessed young lady.
"only her name and address," admitted the caller. he was wondering whether mrs. sappleton was in the married or widowed state. an undefinable something about the room seemed to suggest masculine habitation.
"her great tragedy happened just three years ago," said the child; "that would be since your sister's time."
"her tragedy? " asked framton; somehow in this restful country spot tragedies seemed out of place.
"you may wonder why we keep that window wide open on an october afternoon," said the niece, indicating a large french window that opened on to a lawn.
"it is quite warm for the time of the year," said framton; "but has that window got anything to do with the tragedy? "
"out through that window, three years ago to a day, her husband and her two young brothers went off for their day's shooting. they never came back. in crossing the moor to their favorite snipe-shooting ground they were all three engulfed in a treacherous piece of bog. it had been that dreadful wet summer, you know, and places that were safe in other years gave way suddenly without warning. their bodies were never recovered. that was the dreadful part of it." here the child's voice lost its self-possessed note and became falteringly human. "poor aunt always thinks that they will come back someday, they and the little brown spaniel that was lost with them, and walk in at that window just as they used to do. that is why the window is kept open every evening till it is quite dusk. poor dear aunt, she has often told me how they went out, her husband with his white waterproof coat over his arm, and ronnie, her youngest brother, singing 'bertie, why do you bound? ' as he always did to tease her, because she said it got on her nerves. do you know, sometimes on still, quiet evenings like this, i almost get a creepy feeling that they will all walk in through that window—"
she broke off with a little shudder. it was a relief to framton when the aunt bustled into the room with a whirl of apologies for being late in making her appearance.
"i hope vera has been amusing you? " she said.
"she has been very interesting," said framton.
"i hope you don't mind the open window," said mrs. sappleton briskly; "my husband and brothers will be home directly from shooting, and they always come in this way.

how does the author use structure to create surprise in “the open window”? use evidence from the text to support your response. your response should be at least two complete paragraphs.