Plot twist in the context of "Betrayal"

A stock character, also known as a character archetype, is a type of character in a narrative (e.g. a novel, play, television show, or film) whom audiences recognize across many narratives or as part of a storytelling tradition or convention. There is a wide range of stock characters, covering people of various ages, social classes and demeanors. They are archetypal characters distinguished by their simplification and flatness. As a result, they tend to be easy targets for parody and to be criticized as clichés. The presence of a particular array of stock characters is a key component of many genres, and they often help to identify a genre or subgenre. For example, a story with the stock characters of a knight-errant and a witch is probably a fairy tale or fantasy.

There are several purposes to using stock characters. Stock characters are a time- and effort-saving shortcut for story creators, as authors can populate their tale with existing well-known character types. Another benefit is that stock characters help to move the story along more efficiently, by allowing the audience to already understand the character and their motivations. Furthermore, stock characters can be used to build an audience's expectations and, in some cases, they can also enhance narrative elements like suspense, irony, or plot twists if those expectations end up subverted.

A spoiler is an element of a disseminated summary or description of a media narrative that reveals significant plot elements, with the implication that the experience of discovering the plot naturally, as the creator intended it, has been robbed ("spoiled") of its full effect. Typically, the conclusion of a plot, including the climax and ending, is regarded as highly susceptible to spoilers. Plot twists are also prone to spoilers. Any narrative medium can produce spoilers, although they are usually associated with movies and television shows. Some people attempt to avoid being "spoiled" while others seek out spoilers to learn as much as possible about a narrative before experiencing it. Spoilers have become more common in the present day with the rise of social media, which provides an outlet for people to spread spoilers.

There are three types of spoilers: short spoilers, long spoilers, and thematic spoilers. Short spoilers reveal the plot ending in a very brief and less detailed manner, without any summary or explanation of themes in the story, typically spanning one to three sentences. Long spoilers usually provide more context and range between two and five sentences. They provide a summary and reveal the ending of a story. Lastly, thematic spoilers reveal a story's unifying theme as well as providing a synopsis of the plot and revealing the ending. They range from three to six sentences in length. The general consensus is that there are only negative effects of spoilers. However, research shows that it is short and long spoilers that can cause negative effects, while thematic spoilers generally have a positive effect.

The Twilight Zone (marketed as Twilight Zone for its final two seasons) is an American fantasy science fiction horror anthology television series created and presented by Rod Serling, which ran for five seasons on CBS from October 2, 1959, to June 19, 1964. Each episode presents a standalone story in which characters find themselves dealing with often disturbing or unusual events, an experience described as entering "the Twilight Zone", often with a surprise ending and a moral. The phrase "twilight zone" has entered the vernacular, used to describe surreal experiences.

The series featured both established stars and younger actors who would become much better known later. Serling served as executive producer and head writer; he wrote or co-wrote 92 of the show's 156 episodes. He was also the show's host and narrator, delivering monologues at the beginning and end of each episode, and typically appeared on-screen to address the audience directly during the opening scene. Serling's opening and closing narrations usually summarize the episode's events encapsulating how and why the main characters had entered the Twilight Zone.