Harry Potter and the Goblet of Fire (Harry Potter #4)

Harry Potter is midway through his training as a wizard and his coming of age. Harry wants to get away from the pernicious Dursleys and go to the International Quidditch Cup. He wants to find out about the mysterious event that's supposed to take place at Hogwarts this year, an event involving two other rival schools of magic, and a competition that hasn't happened for a hundred years. He wants to be a normal, fourteen-year-old wizard. But unfortunately for Harry Potter, he's not normal - even by wizarding standards. And in his case, different can be deadly.

New York Times - Janet Maslin

As the midpoint in a projected seven-book series, Goblet of Fire is exactly the big, clever, vibrant, tremendously assured installment that gives shape and direction to the whole undertaking and still somehow preserves the material's enchanting innocence. This time Ms. Rowling offers her clearest proof yet of what should have been wonderfully obvious: what makes the Potter books so popular is the radically simple fact that they're so good.

A phenomenon like Harry Potter does not come along very often. The young wizard and his eager companions Hermione Granger and Ron Weasley have inspired countless children to delve into reading with a fervor rarely seen, and we have J. K. Rowling to thank for that! Rowling has created a fantastic world of wizards and muggles, ghosts and trolls, and good and evil that has completely revitalized a love of reading in both kids and adults all over the world.