This horror story «The Tell-Tale Heart» by Edgar Poe is one of my favourite ones. It is a little bit crazy and very tensive.
The plot of the story is rather simple. Two people, a young one and an old one, lived together. The young man helped the old man to keep the house. But with time the old man started to irritated the young. It was his pale blue eye that made him mad. What happpened in the end you will know when you read the story.
Good luck with learning English through horror stories by Edgar Poe.