Via Starwars.com:

The power of the dark side is on full display in the new novel Star Wars: Lords of the Sith by Paul S. Kemp. Starring Darth Vader and the Emperor at the height of their powers, it offers a glimpse into their relationship as Master and apprentice, how the Empire rules, and much more.

In this exclusive excerpt from the audiobook edition, Darth Vader ponders all that led him to his new persona, and the hate that flows through him.

Click below to see the full article and hear the audio clip.