Which character hides the shameful secret that he's the one who taught Tom Riddle, a.k.a. teenage Voldemort, all about horcruxes?

Professor Slughorn is an old colleague of Dumbledore's; they began teaching at Hogwarts at roughly the same time. During his initial run on the school's faculty, he was the Head of Slytherin House, although he never followed the party line that pureblood wizarding students are superior to half-bloods and Muggles. During his second tenure at Hogwarts, he created the Slug Club to hobnob with his favorite students.

Asked by Beth Sederstrom · Last updated 5 years ago · 344.4K views · SOURCE