Riggs pens a sequel to his young adult bestseller "Miss Peregrine's School for Peculiar Children" with "Hollow City," which catches up with Jacob and Miss Peregrine's students as they arrive in World War II-era London. "It's hard to do this twice, but the author managed," Nelson says of this sequel by Riggs. "It's a classic young adult-with-potential-crossover [book]."
