the Story was taken from the Jedi Academy series, and if you've read them then you'd know that Desann doing this would actually have been impossible because for those who don't know, Yavin4's Moon was once inhabited by the Messipota which is a 1,000 year old race which little is known about except for thier Mayan Structured buildings. Well they were enslaved by the first Sith Lord called Exar Kun, who got all his power from these inhabitants ... and somehow when the original Jedi Council was formed to defeat him, his soul didn't get released and goto the Valley of the Jedi - but instead it stayed on Yavin4.
Well as you might know Luke setup the Academy on Yavin4 and after a small while Exar Kun see this all as his oppertunity to actually cause vicarious damage throughout the galaxy by taking the weaker minded of Lukes pupils.
Desann being the most powerful but most disobediant seemed like one of the best choices, so for a few nights Kun whispered to Desann trying to tempt him to visit the Sith Temple where he could gain full control once he learn the DarkSide.
Unfortunately Desanns ambition to advance quicker than Master Skywalker wanted was ultimately his death. He had spent some days constructing a lightsaber which was actuall forbidden to do because Luke didn't feel they were ready, but one night when Kun came back Desann got into a rage and frantically swong his saber about.
This woke the rest of the academy who come in to see desann dead, as he's killed himself in his frantic attempt to kill the spectre.
However that aside, i believe that Jedi Academy is based very closely on these stories more... the triology of books is bloody good and well worth getting if your a fan
I really love the Admiral Daala character - i still don't think she is dead, but Kevin J Anderson hasn't written any more books post the series, so there is just no way to know.
as for insane puzzles - insane how? By needing to use Jedi Powers for them? i mean the only puzzles that would seem even slightly insane would be the Academy ones but that is so early in the game and your honing your Jedi Skilled, you expect to automatically get a lightsaber and be able to kill a platoon or storm troopers?
Within the Epic battle of the fates the Shadow and the Angel will meet. With it will harbinger the very fight of good vs evil!
