"The Thing on the Doorstep" is a story written by H. P. Lovecraft, part of the Cthulhu Mythos universe of horror fiction. Daniel Upton, the story's narrator, begins by telling that he has killed his best friend, Edward Derby, and that he hopes his account will prove that he is not a murderer. He begins by describing Derby's life and career. He then tells of Asenath Waite, and how Derby and she wed...