Robert Langdon titled "Symbols of the Lost Sacred Feminine." It is later revealed in "The Lost Symbol" that "Symbols of the Lost Sacred Feminine" was published and created 'quite a scandal'. The book "Christianity and the Sacred Feminine", mentioned in "Origin" had reportedly been denounced by the Vatican, "which, in the aftermath, promptly became a bestseller," as quoted by the AI assistant Winston. Robert Langdon Professor Robert Langdon is a fictional character created by author Dan Brown for his "Robert Langdon" book series: "Angels & Demons" (2000), "The Da Vinci Code" (2003), "The Lost Symbol" (2009), "Inferno" (2013) and "Origin" (2017). He
Fictional universe one or several authors but are intended to be used non-canonically by others, such as the fictional settings for games, particularly role-playing games and video games. Settings for the role-playing game "Dungeons & Dragons" are called campaign settings; other games have also incorporated this term on occasion. Virtual worlds are fictional worlds in which online computer games, notably MMORPGs and MUDs, take place. A fictional crossover occurs when two or more fictional characters, series or universes cross over with one another, usually in the context of a character created by one author or owned by one company meeting a character