"It was Dumbledore," Harry elaborated. "No question. Reanimated, a zombie, an Inferius ... whatever you want to call it. I felt him. I know that presence, that power. But I also felt Riddle ... in both the Horcrux and in Dumbledore. And those spells that hit me ... they had such force, such immense potency, but also a dual signature. They were full of such malice, such Dark rage. As if they'd somehow combined their power and cast them as one person. I know that's possible in some cases with Marriage Bonds ... and it got me thinking."