 "Gehenna" sees both Carter and Nutter continue their roles from "Pilot", although it also necessitated changes in filming locations.The episode opens with a quote from W. H. Auden's poem "Blessed Event"—the first of the series' opening quotations—and makes references to the Hebrew Bible's Gehenna.In San Francisco, a group of young men drive to an abandoned factory, and drug one of their members with LSD, leaving him to be torn apart by what he perceives to be a monster.