Extinction

Darth Vader: Extinction is a 2-part comic featured in Star Wars Tales #1 and #2, totaling 32 pages. It takes place 1 BBY.

Plot
Darth Vader arrives on Coruscant and enters the Emperor's chambers. Palpatine tells his apprentice that Mara Jade has found another Jedi known only as the Dark Woman, on the fifth planet in the Cophrigin system. Vader demands that he be the one to kill her, while Mara does the same. Palpatine declares that Vader shall be the one to carry out the mission.

Vader lands on Cophrigin's fifth planet in his Lambda-class shuttle and seeks out the Dark Woman. He engages her in a vicious lightsaber duel, lasting several minutes. In the end, Vader knocks a tree down with the Force, landing on top of the Dark Woman, incapacitating her. Vader goes over to her upper body, sticking out from beneath the tree, and stabs his lightsaber down, but the Dark Woman disappears, in much the same way Obi-Wan Kenobi would a year later. She appears as a Force ghost and tells Vader to let go of the Dark Side and return to being Anakin Skywalker. Vader refuses to do so, slashing his lightsaber through the Dark Woman's transparent form. She disappears, and Vader slowly walks back to his shuttle, successful in his mission.