Arthur Weasley: When you stopped You-Know-Who… Black lost everything. But to this day, he still remains a faithful servant. And in his mind… you are the only thing that stands in the way… of You-Know-Who returning to power. And that is why… he has escaped from Azkaban. To find you.

Harry Potter: And kill me.

Arthur Weasley: Harry, swear to me that whatever you might hear… you won’t go looking for Black.

Harry Potter: Mr. Weasley… why would I go looking for someone who wants to kill me?

Harry Potter and the Prisoner of Azkaban (2004)