Tell Tale Heart

This story was full of confusion.  For me, it didn't make a whole lot of sense at times, but it kept the reader guessing, and it left a lot up to you to figure out on your own.  I noticed a contradiction in the story.  At the beginning he admits that he is very nervous, but then through the ending of the story he wonders about his insanity.  The narrator calls himself a calm man.  That is his defense to insanity.  He is to calm to be mad. This turns out to be a contradiction, because at the end he kills the man because of a constant heartbeat.  The constant noise cracked him, and the so called calm man was seen as a lunatic after this.  In the story there is affection shown from the narrator to the old man, but he still ends up (in my opinion) killing him.  The story shows the difference between the old man, and his evil eye.  This falls in line with some Edgar Allen Poe biography's I read.  They say that he likes to use a mysterious, and unreliable narrator.  The narrator from Tell Tale Heart was absolutely unreliable, insane, and showed only his point of view.