Star Wars (Legends): The last of the Jedi, book 01: The Desperate Mission
Jude Watson2005

The Empire has risen. The Jedi Order has been destroyed. As far as the Emperor is concerned, the Jedi are all but extinct.
But on the remote planet of Tatooine, one Jedi Master remains: Obi-Wan Kenobi. Devastated by the loss of his fellow Jedi—and the betrayal of his former apprentice Anakin Skywalker—Obi-Wan has been left with one last task: To watch over and protect a young child named Luke.
Obi-Wan finds out that a former Jedi apprentice has survived, Ferus Olin. Obi-Wan must make a painful decision: whether to stay on Tatooine or go on one last desperate mission—right into the heart of the Empire.
When Obi-Wan decides to search for Ferus Olin, a known padawan that left the Order, he gets wrapped up in the problems of the planet Bellassa under the influence of the Empire. Will Obi-Wan help this desperate planet or will he rescue Ferus and go?

Titre original : Star Wars (Legends): The last of the Jedi, book 01: The Desperate Mission (2005)