The Harry Potter series continues to get better; this fourth book is better yet than any of the first three. The characters continue to be developed, and Rowling proves that she has a knack for sustaining page-to-page suspense almost indefinitely. Reviews of this book have been done to death in the media, and I have no interest in giving any of the plot surprises away, so I'll just say that this series is very entertaining and enjoyable, and I'm looking forward to Book V. See also, books 1, 2, and 3