Darkness, Part 4 is the thirty-fifth issue in the Star Wars: Republic series of comics. It was published on October 24, 2001 by Dark Horse Comics.

Quinlan Vos is looking for his missing Padawan, Aayla. Unfortunately, she has fallen in with some bad company -- namely a vampiric dark Jedi named Karkko. To make things worse they are all trapped on a lawless prison planet crawling with mutant vampire-like aliens. Quin's pal Villie has a plan to get them off the planet but it doesn't include rescuing Aayla. That's something that Quin won't consider. He must face off against Karkko and rescue his Padawan -- or die trying. Make sure not to miss the conclusion of the thrilling Darkness story arc!