Harry Potter and the Half-Blood Prince introduces a new Draco Malfoy, a serious, mature, young man looking forward to play an important role to follow his family steps. He will become Lord Voldemort's chosen one to open a breach between Hogwarts and Knockturn Alley to take over the school and Dumbledore's life. On the other hand, The Headmaster will instruct Harry Potter to retrieve a key memory from Professor Slughorn to unlock the missing piece of Voldemort's mistery, The Horcruxes. Both sides will collapse at the Astronomy tower with terrible fatalities for the magical world and Snape dominating the scene. "Dumbledore, The Headmaster", sixth illustration of this magical saga; Harry Potter and the Half-Blood Prince.