THE DEFINITIVE GUIDE TO BEST SELLING BOOKS

JK Rowling’s third novel would be the 18th best-selling book of all time, selling over 55 million copies around the world. It follows Harry’s third 12 months at Hogwarts, during which he investigates escaped prisoner Sirius Black, who may be a Death Eater.It’s a cynical strategy for pondering—it suggests there’s nothing you can do—but F