Mulder has further visions of the past. Scully and the police arrive soon after to arrest Goldstein but find Mulder gone. Scully finds him at the family's summer home in Rhode Island and is able to calm him down. While Mulder is cleared in the deaths of the Cassandras, what truly happened when he was a child remains a mystery. Production Writing "Demons" was written by R. W. Goodwin, an executive producer and director for the show. Goodwin was inspired to write the episode after reading "The Landscape of Dreams", an essay by the neurologist and best-selling author Oliver Sacks from the anthology book An Anthropologist on Mars: Seven Paradoxical Tales (1995), which details a man who could recall every detail of his childhood. Interested in this idea, Goodwin developed a story in which "Mulder wakes up in a strange place [with] no idea how he got there". After receiving approval from series creator Chris Carter, Goodwin spent approximately six weeks writing the final episode. The episode explores the past of The Smoking Man, the series' chief antagonist. William B. Davis, the actor who played the character, later noted, "As the story developed, we developed a relationship between Cigarette-Smoking Man and Mulder's apparent father, and Cigarette-Smoking Man and Mulder's mother; then we started backfilling with an historical connection." Carter explained that the episode was the start of the series' greater conspiracy: "It's an interesting development because it really was the development of the conspiracy. The elements of the conspiracy were part of his development. But [The Smoking Man's] back story, of course, intertwined with Mulder's." For this episode, actor Chris Owens reprised his role as The Smoking Man; he had previously played him in the season's earlier episode "Musings of a Cigarette Smoking Man". The episode is based around the idea that Geschwind syndrome (a group of behavioral phenomena, of which one is the ability to recall every memory of one's younger life) can be self-induced by using a unique combination of technology and drugssomething that is not supported by modern medicine. When writing the episode, Goodwin was aware of the idea's implausibility and admitted that he took significant creative liberties with the disorder. In fact, the technology used in the episode to induce Mulder's flashbacks was based on various New Age equipment, including a "brain stimulator". Filming The cottage used in the episode was actually a farmhouse located in