Narrative Theories (The Enigma Theory)

Media theorist Roland Barthes devised a theory of the enigma code, in which he claimed that the purpose of the author of a media text is to keep the audience guessing through establishing enigmas for the audience to work out. These are conventionally revealed in the final scene of the film. This is a useful tool for a trailer, as establishing enigma codes makes the audience want to find out the answers to the enigmas and go and see the film.