The Chronicles of Narnia (although we do not learn their surname until "The Voyage of the Dawn Treader"), and eventually become Kings and Queens of Narnia reigning as a tetrarchy. Although introduced in the series as children, the siblings grow up into adults while reigning in Narnia. They go back to being children once they get back to their own world, but feature as adults in "The Horse and His Boy" during their Narnian reign. All four appear in "The Lion, the Witch, and the Wardrobe" and "Prince Caspian"; in the latter, however, Aslan tells Peter and Susan that they will not return, as
The Chronicles of Narnia: The Voyage of the Dawn Treader credits to have visual interest, and also because they wished to include an acknowledgement to Baynes, who died in August 2008. After the success of the 3D release of "Avatar", 20th Century Fox announced in February 2010 that "The Voyage of the Dawn Treader" would be released in Digital 3D and RealD 3D formats; it is the first "Narnia" film to have a 3D release. Walden had previous experience creating 3D films, having released James Cameron's documentaries "Ghosts of the Abyss" and "Aliens of the Deep", as well as "Journey to the Center of the Earth" with New Line Cinema.