"Space and time." . . "Space and time Juvenile fiction." . . "Fantastic fiction." . . . . "Philip and Linda, attempting to explore an ancient castle beneath the lake, become involved in another world of witches, evil forces, and Linda's own origins."@en . "Philip and Linda, attempting to explore an ancient castle beneath the lake, become involved in another world of witches, evil forces, and Linda's own origins." . "Juvenile works"@en . "Juvenile works" . . . . . . . . . . . . . . . . . . . . . . . . . . . . "The marrow of the world"@en . "The marrow of the world" . . . . . . . . . "Fiction" . "Fiction"@en . . . . . "Grade level: Philip and Linda, attempting to explore an ancient castle beneath the lake, become involved in another world of witches, evil forces, and Linda's own origins."@en . . "1900 - 1999" . . "Space and time Fiction." . . "Witches Fiction." . . "Witches." . . "Witches Juvenile fiction." . . . .