How did the blood stain prove to be persistent?

1.	How did the blood stain prove to be persistent?
Answer» Mrs. Otis noticed a dull red stain on the floor just by the fireplace. She ordered Mrs. Umney,the housekeeper to clean the stain.But Mrs. Umney refused to do so and explained that the blood stain dated back to 1575. That is the spot where Sir Simon Canterville killed his wife Lady Eleanore de Canterville. Otises did not believe and then, Washington removed the stain with a detergent. But, the next day the stain reappeared. Whenever they removed the stain, it came back the next day.

Discussion