A "Surprise Ending" is a narrative technique where the conclusion of a story reveals an unexpected twist or outcome. This technique often challenges readers' assumptions and keeps them engaged until the final moments. Surprise endings can be found in various forms of storytelling, including literature, films, and short stories. These endings typically rely on foreshadowing and misdirection, leading the audience to draw certain conclusions that are later subverted. Famous examples include works by authors like Agatha Christie and O. Henry, who skillfully craft plots that culminate in shocking revelations, leaving a lasting impression on their audience.