The Oval Portrait

The tale begins with an injured narrator (the story offers no further explanation of his or her impairment) seeking refuge in an abandoned mansion in the Apennines. The narrator spends his or her time admiring the paintings that decorate the strangely shaped room and perusing a volume, found upon a pillow, that describes them.
Upon moving the candle closer to the book, the narrator immediately discovers a before-unnoticed painting depicting the head and shoulders of a young girl. The picture inexplicably enthralls the narrator "for an hour perhaps". After steady reflection, he or she realizes that the painting's "absolute life-likeliness' of expression is the captivating feature. The narrator eagerly consults the book for an explanation of the picture. The remainder of the story henceforth is a quote from this book — a story within a story. Wikipedia