Forms
Anagnorisis
Anagnorisis, or discovery, is the protagonist's sudden recognition of his or her own or another character's true identity or nature.[6] Through this technique, previously unforeseen character information is revealed. A notable example of anagnorisis occurs in Oedipus Rex: Oedipus kills his father and marries his mother in ignorance, learning the truth only toward the climax of the play.[7] The earliest use of this device as a twist ending in a murder mystery was in "The Three Apples", a medieval Arabian Nights tale, where the protagonist Ja'far ibn Yahya discovers by chance a key item towards the end of the story that reveals the culprit behind the murder to have been his own slave all along.[8][9] -Wikipedia