Now not only the wizarding world but also the world of Muggles feels the growing power of Voldemort, and Hogwarts can no longer be called the safe haven it once was. Harry suspects that some danger is lurking in the castle itself, but Dumbledore is more focused on preparing him for the final battle, which he knows is not far off. Together they try to unravel the secret of Voldemort's immortality, and for this, Dumbledore invites his old friend and colleague, Professor Horace Slughorn, to the position of Potions Master, who loves to throw parties for the chosen ones and prides himself on his great connections in high circles. But this bon vivant does not suspect that Dumbledore hopes to obtain the most important information from him.
