The Magician King, by Lev Grossman
Little jaunt to the underworld? Don’t forget your passport. The second installment in Lev Grossman’s Fillory series, The Magician King, continues to play with realist fantasy and the right amount of irony to meld the two. Quentin and his pals provide a sly and subversive fairy tale for grown-ups, with a caution: be careful what you wish for. You might get it.