Yesterday, Elijah Wood was /is-elijah-wood-returning-for-the-hobbit/rumored to be returning as Frodo Baggins in Peter Jackson's two-part Lord of the Rings prequel The Hobbit, despite the character not appearing in the book. Today, Wood's return was confirmed, and it has been revealed exactly what part Frodo will play in the story.
The adventurous tale of Bilbo Baggins, as it exists in J.R.R. Tolkien's mythical universe, is contained in the fictional Hobbit tome 'Red Book of Westmarch', which is seen in the LOTR films as being written in by both Bilbo and Frodo, and then later handed off to Samwise "Sam" Gamgee. In The Hobbit, Elijah Wood will appear as Frodo at the beginning and end of the two films, reading from the 'Red Book', experiencing Bilbo's journey as we watch it unfold on the screen.
These scenes were always in the screenplay that Peter Jackson and his team have been working on for the past year, and it is speculated that Elijah Wood has known for a long time that he would be appearing in the prequels. The book-end sequences that find Frodo reading from the 'Red Book' could also conceivably include appearances from Sam, Merry, and Pippin as well, so don't be surprised if you hear more casting rumors in the upcoming few days that Sean Astin, Billy Boyd, and Dominic Monaghan are all coming back.