 Shooting for exterior scenes took place on Vancouver's Mount Seymour, occurring just a week before Duchovny's wedding.The episode, which has been described by Carter as pondering "the existence of God", has received mixed responses from critics, with its cliffhanger ending frequently being cited as its main failing.The episode opens "in medias res" to police investigating a dead body in the apartment of FBI agent Fox Mulder (David Duchovny).