Star Wars: Episode III – Revenge of the Sith in their duel is mostly the speed at which it was filmed, although there are instances where single frames were removed to increase the velocity of particular strikes. An example of this occurs as Obi-Wan strikes down on Vader after applying an armlock in the duel's first half. "Revenge of the Sith" eventually became the first "Star Wars" film in which Anakin Skywalker and the suited Darth Vader were played by the same actor in the same film. As Christensen recounted, it was originally intended to simply have a "tall guy" in the Darth Vader costume, but after "begging and
Star Wars: Episode III – Revenge of the Sith state to fight a Sith Lord. These are a few examples of many descriptions of characters' feelings and inner narrative. There are even some humorous lines added in, including extra dialogue in the battle between Grievous and Obi Wan - Grievous says, "I was trained by Count Dooku," and Obi-Wan replies, "What a coincidence; I trained the man who killed him." An official prequel novel, "Labyrinth of Evil" () by James Luceno, was published in 2005. It is set near the end of the Clone Wars and directly before the events of "Star Wars: Episode III Revenge of the Sith".