When Blaise joins Horace Slughorn's "Slug Club ... showing her as the only female Slytherin in Draco's social circle. Fans will know that Phineas Nigellus Black, the great-great-grandfather ...

Draco Malfoy attempts to kill Albus Dumbledore ... on one of the most powerful wizards in the show. In addition, Blaise Zabini, the Bloody Baron, and even Hogwarts founder Salazar Slytherin ...