Though its synopsis sounds more like a sequel to Pan's Labyrinth, The Book of Lost Things, from author John Connolly, takes a slightly different approach.
Up for Adaptation: The Book of Lost Things
Director John Moore has option The Book of Lost Things, a dark fantasy novel about a 12-year-old boy. Though the character is young, the book is meant for adults. Taking place in World War II, the story follows a boy whose mother dies, father remarries and new stepmother becomes pregnant.
Like Ofelia in Pan's Labyrinth, the boy escapes his problems by imagining another world full of monsters that he must fight. While Ofelia did this off the top of her head -- wait, was it her imagination? -- the boy finds his source material from the books that he reads.
Other Connolly books set for the screen include his thriller novel Bad Men, in development with screenwriter Stephen Susco at Sobini Films, and his short story The New Daughter, optioned by Gold Circle Films with a screenplay by John Travis.