Though forbidden to intervene in Jedi affairs, Luke is determined to keep history from being repeated. With his son, Ben, at his side, Luke sets out to unravel the shocking truth behind Jacen Solo's corruption and downfall. But the secrets he uncovers among the enigmatic Force mystics of the distant world Dorin may bring his quest--and life as he knows it--to a sudden end. And all the while, another Jedi Knight, consumed by the same madness as Jedi Knight Valin Horn, is headed for Coruscant on a fearsome mission that could doom the Jedi Order...and devastate the entire galaxy.