The document discusses several narrative theories and their application to teen slasher films. It describes Vladimir Propp's characterization of 8 character types and 31 narrative functions that move stories along. Propp's theory is difficult to apply to teen slashers which lack generic heroes. Claude Levi-Strauss suggested binary oppositions like good/evil drive narratives by creating conflict. This theory can be applied to teen slashers through themes of good vs evil and male vs female. Roland Barthes' concept of enigma codes refers to unexplained narrative elements that create mystery and suspense. In teen slasher films, the identity of the killer is typically the main enigma revealed at the end.