Invincible is the last novel in the Legacy of the Force series by Aaron Allston, Troy Denning, and Karen Traviss. It is perhaps the only book in the entire pantheon of the Expanded Universe which was intentionally undermined by the craptastic nature of its preceding work, Revelation (three guesses as to who wrote that, and the first two don't count).
Let's see what we've got to work with...
Okay, after that giant clusterfuck that was the Battle of Fondor and the re-emergence of that hyper-bitch Admiral Natasi Daala, we've now got
three four five factions fighting it out in the Second Galactic Civil War: Darth Moron's Galactic Alliance, Lady Fishface's Galactic Alliance, Luke Skywalker's Jedi Coalition, and of course the Confederation. Oh, the Imperial Remnant is also floating around out there, just waiting to seize this chance to reassert itself, now without Gilad Pellaeon's calming influence.
The Mandalorians are also out there, but they don't count.
So here's your basic setup. Now, Jaina Solo thinks that the only way to beat her asshole brother is to learn how to fight like a Mandalorian, since it was apparently only by their skills that the clone troopers were able to execute Order 66. Also
Anakin Solo's Luke's son gets molested by a wannabe Sith girl after buggering up a covert op, and now Tenel Ka has two cousins because apparently deus ex machina is an allowable plot device. Suffice to say that, in the end, Jaina gives Jacen his well-deserved lightsaber beatdown, and the day is saved...for now.
Oh yeah, and neither Boba Fett nor his granddaughter can ever return to Mandalore, thanks to an Imperial nanovirus that will kill them off within a couple of minutes. But hey, authors, don't let that stop you from bringing them back there anyway!
Behind the scenesEdit
The series wasn't even cold in the ground when LFL gleefully announced a follow-on work, which would be a tie-in for Legacy and...you guessed it...another new book series. Perhaps the only redeeming factor of this new development was the announcement that Traviss would not be a part of the project. Little solace was to be had, however, because her replacement would turn out to be a complete n00b to the Star Wars universe. What fun.
A nice big grab-bag full of new tech, creatures, and other stuff is introduced in this novel, with lovely long explanations to make the editors over at Wookiepedia happy for quite a while.