Fairytales should seem magical"and parts of this prequel to J.M. Barrie's Peter Pan, (adapted by Jersey Boys co-writer Rick Elice from humor writer Dave Barry and suspense novelist Ridley Pearson's best-selling 2004 children's novel) do deliver that sparkling sense of the impossible made possible. Without resorting to crashing chandeliers or the web-swinging acrobatics of superheroes, directors Roger Rees and Alex Ti…