The Thing on the Doorstep is a short 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. Daniel Upton’s relationship with his friend Edward Der...