Edgar Allen Poe's "A Tell-Tale Heart"

After reading Edgar Allen Poe's "A Tell-Tale Heart", I am some what disturbed.  The hatred of the killer in the book towards the old man is intense.  The way he plans out how he is going to kill the old man, and talks about how he was incredibly nice to the man the entire week he planned to kill him is shocking.  This man, the one that killed the older man, resembles evil.  His thoughts are unneccessary.  Overall, I did however enjoy this story.  Just like "A Rose for Emily", this short story is full of darkness, and I enjoy reading dark stories.  They keep me thinking and are entertaining.