I just finished reading Harry Potter and the Half-Blood Prince. It is the sixth book in the series. It is about Harry Potter going back to Hogwarts for his sixth year. But this year is a little different. First Harry has a new teacher ,who used to be a teacher but retired. But usually there is a new Defense Against the Dark Arts teacher but this year Professor Snape took that job and Harry's new teacher Professor Slugorn is the Potions teacher. Harry gets a potions book that is very unique, it is the Half-Blood Princes book.
I would recommend this book for people who have one read the other books, two for people who like mystery and some sad and dramatic parts.