Board Thread:Spoilers!/@comment-1916997-20160516011444/@comment-26394456-20160516015455

My guesses/hopes are "The Gift of the Magi" and "After TwntyYears" both by O. Henry, "The Tell-Tale Heart" by Poe and maybe "Flowers for Algernon" (this is a little more of a stretch, but The Land of Untold Stories could be where Charlie runs off to).