Supernatural - Season 5 Episode 6 -

Sam and Dean investigate a series of odd murders that strangely resemble fairy tales and urban legends. The brothers track down an 11-year-old boy named Jesse, and realize that whatever Jesse believes is coming true. Castiel appears again and tells Sam and Dean that Jesse is a serious threat and needs to be eliminated which deeply disturbs and divides them since it is against the Winchester brothers' custom of killing a human.