. . "Space and time Fiction." . . "Frères et soeurs Romans." . . "Parapsychologie Romans." . . "Brothers and sisters Fiction." . . . . . "Marco has always been obsessed with travelling. When his younger sister, Lilly, discovers an invisible tunnel in their basement, he can't resist crawling into it. What he discovers there is truly fantastical." . . "Fiction" . "Fiction"@en . . . . . . "Young adult fiction" . . . . . . . "Science fiction"@en . "Science fiction" . . . . . . . "Young adult works" . "Marco's millions" . . "Marco's millions"@en . . . . . . . . "Marco's Millions" . "Marco's Millions"@en . . "Twelve-year-old Marco's love for travel and for his younger sister Lilly, who has psychic powers, leads him to journey to other universes, gaining the ability to go wherever he wishes without growing old."@en . . . "Twelve-year-old Marco's love for travel and for his younger sister Lilly, who has psychic powers, leads him to journey to other universes, gaining the ability to go wherever he wishes without growing old." . . "Juvenile works" . . "Juvenile works"@en . . . . . . . "Human-alien encounters Fiction." . . "Psychic ability Fiction." . . "Extraterrestres Romans." . . "Science-fiction." . .