Since George Lucas completed the Star Wars Prequel Trilogy, Dark Horse and the other licensees focusing on the Expanded Universe have made an effort to follow and focus on the rich area between Episodes III and IV, the dark times of the galaxy. This has included an intense following of Darth Vader during those early years following Revenge of the Sith. Darth Vader and the Ninth Assassin continues this trend, with an ongoing story that serves itself as a new mystery that the Sith Lord must get to the bottom of.
Hired by a wealthy unnamed industrialist, at the cost of his eyes, an unknown assassin (who may potentially rival Boba Fett in coming years) tracks down Vader as his new target. For the time being, this Ninth Assassin follows the Sith Lord from a distance, ostensibly able to anticipate his next moves and actions, as he lies in wait for the inevitable confrontation to arise in future concluding issues.