Darth Vader Universe material. Darth Vader first appears in "Star Wars" (later retitled as "A New Hope") as a ruthless villain serving the Galactic Empire. He is tasked, along with Imperial Governor Grand Moff Tarkin, with recovering the secret technical plans for the Death Star, which were stolen by the Rebel Alliance. Vader captures and tortures Princess Leia Organa, who has hidden the plans inside the droid R2-D2 and sent it to find Vader's former Jedi Master Obi-Wan Kenobi on the planet Tatooine. During Leia's rescue, Vader kills Obi-Wan in a lightsaber duel. Having placed a tracking device aboard the "Millennium Falcon",
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".