Our paranormal epics, action flicks, and monster movies are stuffed with metaphor. The billion-dollar success of Christopher Nolan’s bleak Dark Knight alerted studio executives back in 2008: metaphorical thinking was in. Summer blockbusters could grapple with bigger themes and darker allegories without turning off their sebum-soaked ticketholders. This gimmick has seeped across all the blockbuster industries: graphic novels, television, young adult books. You’re surely familiar with the biggies by now: The mutant struggle for assimilation is about gay civil rights. Vampires represent our anxiety about dying alone or, worse, never dying alone. Zombies, their uprising, and our anticipated armed struggle against the undead horde is metaphor for plague—specifically, AIDS.