This paper will discuss Edgar Allan Poe's unity of effect. This paper will also illustrates this theory in the works, "The Pit and the Pendulum," and "The Fall of the House of Usher." Through this paper, it will be known how this great writer inspired unity throughout his works through the setting, character description and narration that is weaved through his works. His talent was strong enough to direct his life, yet the constant emphasis on ancient family and on rich and costly surroundings in his stories indicates that the expensive tastes nurtured in him when young never changed. His disappointment in love, the loss of a gentleman's estate and the constant recurrence of death in Poe's family undoubtedly heightened Poe's morbid preoccupation. His own vivid sense of the dramatic and his restless nature that craved excitement, account for the startling situations in his stories.