 However, when Truant investigates, he finds no history of the house, no evidence of the events experienced by the Navidsons, and nothing else to establish that the house or film ever existed anywhere other than in Zampanò's text.Many of the references in Zampanò's footnotes, however, are real, existing both within his world and our world outside the novel.For example, several times Zampanò cites an actual Time-Life book, "Planet Earth