Star Wars Dark Lord by James Luceno (2006, Paperback, Reprint)

James Luceno's brilliant sequel to Revenge of the Sith manages to not only complete the saga of Anakin's descent into Darth Vader, but create a dynamic, moving portrait of loss and acceptance in a galaxy turned suddenly upside down.

Jedi Knight, Roan Shryne, has all but abandoned his faith in the Force in the wake of the tragic events of Order 66. He finds little solace in his companion, a plucky young Padawan who has grand plans of saving the remnant of Jedi. En route, he discovers something even more disturbing, a chance to give up life as a Jedi and start over as an ordinary man.

Darth Vader is also undergoing a crisis of faith, unable to move on past the deceit and betrayal of his masters (both Obi Wan and Sidious) and to forge for himself a reason for being other than as yet another pawn for Palpy. But the dark plans of Sidious have only just begun as the Sith Lord prods and pushes Vader into situations that will trigger the chrsalysis of rage, a pathway to the true power of the dark side. His machinations will team Vader up with the newest emergent power, an Imperial Moff, who's overarching designs will mean the enslavement of a nation and the means of fueling life into the Empire's emerging superweapon, the Death Star.

Luceno builds a story filled with pathos, horror and intriguing insights into the minds of Darths Vader and Sidious. Numerous long-standing questions are answered along the way as we're enmeshed in the moral dilemma of a galaxy that's lost its way: a Clone Commando who will not obey Order 66, a politician who risks all to secretly undermine the Empire, a young Padawan that learns -- too late -- the price of blind obedience to duty, a race of fierce beings who will fight at all costs a losing battle against tyranny, and the former Chosen One who learns that he needs the Jedi still to grow into the agent of evil he's chosen to become.