Peter David

Zack Stone must return to Oblivion after his father is killed by the evil Red Eye. Zack is a pacifist but Oblivion needs a new sheriff to foil Red Eye and his gang of hellions. (imdb)

In the alien-western world of Oblivion, a suave, yet lethal bounty hunter named Sweeney arrives to arrest the seductive outlaw Lash on multiple charges, including murder. Lash, who just "inherited" a mine of Derconium (the most valuable mineral in the universe) from Crowley in a game of cards, meets up with Redeye's brother, Jaggar, who wants the mine for himself to rule the galaxy. It's a fight over Lash between the sheriff of Oblivion, Jaggar, and Sweeney. But who will emerge victorious? (imdb)

Jack is now back in the future. He had since lost Lena, and finds out that he's lost his other wife Alice to none other than Harris. While heading out for another assignment, something goes awry with the TCL chamber. Jack finds himself in a whole new dimension. He also runs across a different version of trancers. These guys seem to be in control of this planet. Jack manages to assist a rebel group known as the "Tunnel Rats" crush the rule of the evil Lord Calaban. (imdb)

Jack's back for one more round with the Trancers. Jack Deth must attempt to find his way home from the other-dimensional world of Orpheus, where magic works and the Trancers were the ruling class (before Trancers 4, that is). Unfortunately, Jack's quest to find the mystical Tiamond in the Castle of Unrelenting Terror may be thwarted by the return of Caliban, king of the Trancers and once thought dead. (imdb)