For those very familiar with The Hobbit, a story point left out of The Hobbit: An Unexpected Journey is detailing exactly how Gandalf got involved in Thorin's quest. In the novel and LOTR Appendices Gandalf found Thrain (Thorin's father and a Ring Bearer) dying near the Necromancer's HQ of Dol Guldur. Before dying Thrain gave Galdalf the map and key to reclaim the Lonely Mountains for his people. Vulture spoke with The Hobbit co-writers Peter Jackson and Philippa Boyens who explained that this bit of Middle-Earth history will be seen in The Hobbit: Desolation of Smaug. Jackson also said on Smaug "We've shot it, we've cut it, and we just need to refine it".

"We did try it at the front of this movie, and then we moved it," [Boyens] said. "...it's very important that we're going to be doing that. We will be meeting Thráin, and it may be in unfortunate circumstances. It may involve torture. The discovery of who or what is in Dol Guldur is a fantastic part of the storytelling, so yes, of course we went there."

"There's a lot of potential, isn't there?" Jackson teased. "You never know what we've already filmed as well. But there's certainly a lot of great material, and we'll make good use of it."

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