This book is the sixth in the total 7 series of Harry Potter series. The Author has really worked hard in it. About story we can say that if u have read the earlier books then you will really appreciate how the author relates the current characters with historic ones and creates mystery. For those who have not read any previous book are advised to do so to enjoy this book but for a recap let me help, Harry potter is a boy who got saved from a very evil force and how he did that is still mystery and that makes him popular as "The boy who lived". The evil force is a wizard called "Voldemort" but people fear calling him by name and so he is better called as "he who must not ba named" OR "You know Who". All previous books contain 5 different stories of encounter of Potter and Voldemort (Except 3rd book). Now about the Story, the boy potter still hates his potion classes but is amazed to found that Prof. Snape is no more teaching Potions and also that the new DADA professor is someone he never thought would be able to get the post. He is determined to help his professor "Dumberdore" to put an end to Voldemort. He goes on one such mission with Dumberdore and then events take turn and Potter has to face new challanges which require both mental and physical stability. What happens in the mission and afterwards is the main attraction of the story. The love relation between the (now teen) characters is also shown, the story creates a fog of mystery between current relations viz good & Bad.. Readers are left with their own thoughts for the events and characters. .Some killing is there in book and at end we find some sorrows and determination. This book still hides the core for the last and final book that is book 7 I wont tell more. You please read it.