The historic five-year mission is over. But Kirk, McCoy, Scotty and the crew join forces again on the Enterprise to thwart an incredibly destructive power—a threat to earth and the human race. This novel is written by the creator of Star Trek, Gene Roddenberry.

The Federation starship Reliant is on its surveying mission to find a lifeless planet to serve for the test site for Genesis Project. While surveying Ceti Alpha V they accidentally discover the camp of Khan Noonien Singh, who with his followers, quickly captures the ship. Khan then seizes space station Regula I where the Genesis Project is being developed. Khan lures his nemesis, Kirk and the Enterprise TM crew to the space station. Kirk and the crew must then prevent Khan from destroying the Enterprise and detonating the Genesis device.

No One On The Enterprise Can Believe That Mr. Spock Is Gone! As the crew grieves for Mr. Spock, the awesome Genesis Device, now controlled by the Federation, has transformed an inert nebula into a new planet teeming with life. But Genisis can also destroy existing worlds. The creators of the Device want it given freely to the Galaxy. But Starfleet Command fears that it will become a force for evil. And the enemies of the Federation will not rest until they seize it—as their most powerful weapon in the battle to conquer the Galaxy!

Admiral James T. Kirk is charged by the Klingon Empire for the comandeering of a Klingon starship. The Federation honors the Klingon demands for extradition, and Kirk and the crew of the Starship Enterprise are drawn back to Earth. But their trip is interrupted by the appearance of a mysterious, all-powerful alien space probe. Suddenly, Kirk, Spock, McCoy and the rest of the crew must journey back through time to twentieth-century Earth to solve the mystery of the probe.

The planet Nimbus III. A desolate, forbidding world, situated in the heart of the Neutral Zone. Unremarkable, except for one thing: Nimbus III is the site of an unprecedented attempt at cooperation among the galaxy's three major powers. Here, at this "Planet of Galactic Peace", the Klingons, the Romulans, and the Federation have all sent ambassadors, who are working together to develop the planet – an experiment that, if it succeeds, could transform the galactic balance-of-power. But now terrorists have seized control of Nimbus III. And when Captain Kirk and the crew of the Enterprise attempt a dramatic rescue, they discover a threat unlike any they have ever faced. A threat that will force them to confront the inner demons of their own, secret pasts – and the forbidden secrets that lie at the center of the galaxy itself…

Internal pressures, enormous military expenditures, and the destruction of their primary energy source have brought the Klingon Empire to the verge of catastrophic collapse. To avert disaster, Gorkon, Chancellor of the Klingon High Council, proposes negotiations between the Federation and Klingon Empire, negotiations that will put an end to the years of hostility between the two powers, and herald a new era of peace and cooperation. Captain James T. Kirk and the U.S.S. EnterpriseTM are dispatched to escort the Chancellor safely into Federation space. But a treacherous assassination brings negotiations to a sudden halt and places Kirk and Dr. McCoy in the hands of the Federation's greatest enemy. With time running out, Spock and the Enterprise crew work to uncover the deadly secret that threatens to propel the galaxy into the most destructive conflict it has ever known.