Deathstalker Coda (Deathstalker #8)

More than two centuries ago, angry and grief-stricken after losing Owen Deathstalker, Hazel d'Ark entered the Madness Maze-- which fed off her raw emotions and transformed her into the Terror, a force capable of devouring galaxies. To stop her, the recently resurrected Owen must use the powers he gained during his own stay in the Madness Maze-- and go back in time to prevent Hazel's transformation.

Now, without Owen to guide him, Lewis Deathstalker has no choice but to assume command of an Imperial fleet loyal to the Deathstalker legacy and lead it to victory over Finn Durandal, the despot who seized the throne. Lewis knows that he has been branded a traitor by the Empire. But when he learns that Finn has executed his entire family, his mission to overthrow his former friend's tyranny is second to his desire for revenge...