The Tell-Tale Heart is a wonderful animated short film of 1953 based on Edgar Allan Poe short-story. The story told by a mad man has a dark visual with a perfect work of narration by James Mason. It is a UPA Production and was the first cartoon to be X-rated (adults only) in Great Britain under the British Board of Film Censors classification system. Really great - you have to see it. Click on link above or HERE.