Hailed as "a breakneck, jam-packed roller coaster of an adventure" by J. K. Rowling, this New York Times bestseller is the first installment in the explosive tween fantasy series by famed Hollywood director Chris Columbus (of Harry Potter fame) and bestselling author Ned Vizzini (It's Kind of a Funny Story). Siblings Brendan, Eleanor, and Cordelia Walker once had everything they could ever want. But everything changed when Dr. Walker lost...