Harry Potter and the Half-Blood Prince

«Harry Potter and the Half-Blood Prince» — the sixth book in the Harry Potter series by British author J.K. Rowling.

Voldemort strengthens his power, and the wizarding world is plunged into fear. Dumbledore begins to introduce Harry to the secrets of Tom Riddle's past, showing memories that reveal the origins of his cruelty and the path to immortality through the creation of Horcruxes. Harry realizes that the only way to defeat the Dark Lord is to destroy all parts of his splintered soul.

At school, Harry finds an old potions textbook with annotations from the mysterious «Half-Blood Prince», whose advice helps him achieve outstanding success. However, the mystery of the Prince's identity gradually unfolds and takes on a tragic significance.

In the finale, Dumbledore and Harry go after one of the Horcruxes. Upon their return, Death Eaters attack Hogwarts, and Harry witnesses Severus Snape kill Dumbledore. The book ends with the heavy realization of loss and the inevitability of the decisive battle that Harry must now be prepared to face alone.
More details:http://www.labirint.ru/books/476067/