The first sentence of the concluding paragraph uses the principal words from the quotations from each paragraph of the body of the paper. This summarizes those three paragraphs. The second and third sentences provide observations which can also be considered a summary, not only of the content of the paper, but also offers personal opinion which was logically drawn as the result of this study. The last sentence returns to the Edgar Allan Poe-Stephen King relationship that began this paper. This sentence also provides a "wrap-up" and gives the paper a sense of finality.
Some assignments are given page count requirements instead of word count. A normal, typed, double-spaced essay without footnotes is said to yield approximately 250 words per page. Page count requirements are open to cheating by doing things like extending the line height, widening all four margins, increasing the font size or using a wider-style font, using footnotes, and other style elements that help spread the content over the pages. While this may satisfy the requirement, keep in mind that your instructor is expecting a certain level of content in the essay, and an incomplete essay stretched over the required amount of pages is still an incomplete essay. Conversely, an essay that blathers on will still seem to blather even if the student creatively crams more words into a smaller space.