Harry Potter and the Prisoner of Azkaban discussion

All the while I had been reading this book, I felt been a part of the story. I can experience the ambience in each and every chapter. I was so engrossed in the book that I spent one whole day reading the book! From the intial chapters till the almost end the story has been built on, none of the mysteries were clearing up instead more clouds of suspenses were fogging in my mind but it was all solved in the last three to four chapters.
Extremely fantastic book!