Quidditch Through the Ages the fictional and real world it is the definitive handbook on the history and intricacies of the game. It also serves as a catalogue of the many British Quidditch teams. When Severus Snape caught Harry outside the school with this book in "Harry Potter and the Philosopher's Stone", he invented the rule that no library books were allowed outside the school, and confiscated it. In the "Harry Potter" universe, Kennilworthy Whisp is a Quidditch expert and fanatic who has written many books about the sport. He lives in Nottinghamshire, where he divides his time with "wherever the Wigtown Wanderers are
Harry Potter and the Chamber of Secrets seven books had been published, Graeme Davis regarded "Harry Potter and the Chamber of Secrets" as the weakest of the series, and agreed that the plot structure is much the same as in "Harry Potter and the Philosopher's Stone". He described Fawkes's appearance to arm Harry and then to heal him as a "deus ex machina": he said that the book does not explain how Fawkes knew where to find Harry; and Fawkes's timing had to be very precise, as arriving earlier would probably have prevented the battle with the basilisk, while arriving later would have been fatal to Harry