Harry Potter: the Quest unlocked its latest exclusive feature, focusing on the evolution of Tom Riddle to Lord Voldemort, and the eventual destruction of the Dark Lord in the Harry Potter series. Ralph Fiennes, Daniel Radcliffe, and directors David Yates and Mike Newell commented throughout the clip, where they discussed why Tom became Voldemort.

Ralph and Dan discussed how Voldemort became increasingly more insane as his Horcruxes were being destroyed in Harry Potter and the Deathly Hallows: Parts I and II, and how he was losing what semblance he had of himself. That can be viewed here.

Daniel Radcliffe: In the first part of the seventh, he's the most composed and the most in control we've ever seen him.

Ralph Fiennes: He's at the peak of his power, about to grasp victory and defeat Hogwarts and Harry Potter.

David Yates: Voldemort feels incredibly strong, but then he discovers that Harry's been hunting Horcruxes, so he suddenly realizes that, for that the first time we’ve ever seen him, that he's particularly vulnerable. And there's this journey that he takes through the film where he starts to fragment.

Ralph: There's more extremes of emotion and rage and distress, and something essential is being ripped out of me every time Harry and his friends destroy these Horcruxes. So he's a man who's - the last part of the story, he's diminished, he's sort of imploding.

Dan: It's a really interesting journey for his character because he's going from somebody who is very stable and in control, and evil and malevolent but, nonetheless, steady. And as Harry starts destroying parts of his soul, he starts slowly kind of losing his mind, as well. By the end of the second part, he's almost totally lost his mind.

The Harry Potter and the Deathly Hallows: Part I Blu-ray and DVD sets, out now, can be ordered at the WB Shop or Amazon at the links below. A list of international dates for the DVD's release can be found here.

US Deathly Hallows 1-disc DVD | US Deathly Hallows 1-disc Blu-ray | US Deathly Hallows 2-pack collector's set | US Deathly Hallows 2-disc DVD SE | US Deathly Hallows 3-disc Triple Play DVD/Blu-ray
UK Deathly Hallows 2-disc DVD | UK Deathly Hallows 3-disc Triple play DVD/Blu-ray | UK Deathly Hallows 3-disc Limited Edition Triple Play Steelbook