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.

    Its most honored captain is in disgrace, its most celebrated starship in pieces, and the crew of that ship scattered among the thousand worlds of the Federation... Thus begins Prime Directive, an epic tale of the Star Trek universe. Following in the bestselling tradition of Spock's World and The Lost Years, Judith and Garfield Reeves-Stevens have crafted a thrilling tale of mystery and wonder, a novel that takes the Star Trek characters from the depths of despair into an electrifying new adventure that spans the galaxy. Journey with Spock, McCoy, and the rest of the former crew of the Starship Enterprise to Talin—the planet where their careers ended. A world once teeming with life that now lies ruined, its cities turned to ashes, its surface devastated by a radioactive firestorm—because of their actions. There, they must find out how—and why—this tragedy occurred and discover what has become of their captain.

    But when an alien spacecraft crash-lands in the South Pacific bearing visitors from another world, the Vulcans, Earth must decide whether to extend the hand of friendship, or the fist of war. In the distant future, horrible dreams torment Admiral James T. Kirk, dreams prompted by his reading of Strangers from the Sky, a book about that historic first contact. He dreams of an alternate reality where he somehow changed the course of history, and destroyed the Federation before it began.

    On the planet Vulcan, a crisis of unprecedented proportion has caused the convocation of the planet's ruling council—and summoned the U.S.S. Enterprise™ from halfway across the galaxy to bring Vulcan's most famous son home in its hour of need. As Commander Spock, his father, Sarek, and Captain James T. Kirk struggle to preserve Vulcan's future, the planet's innermost secrets are laid before us, from its beginnings millions of years ago to its savage prehistory, from merciless tribal warfare to medieval court intrigue, from the exploration of space to the development of o'thia—the ruling ethic of logic. And Spock—torn between his duty to Starfleet and the unbreakable ties that bind him to Vulcan—must reconcile both his own inner conflict and the external dilemma his planet faces... lest the Federation itself be ripped asunder.

    "You will forever be a child of two worlds, capable of choosing your own destiny. the only question you face is, which path will you choose?" The other grew up on the jagged cliffs of the harsh Vulcan desert, fighting for acceptance, for a way to reconcile the logic he was taught with the emotions he felt. In the far reaches of the galaxy, a machine of war bursts into existence in a place and time it was never meant to be. On a mission of retribution for the destruction of his planet, its half-mad captain seeks the death of every intelligent being, and the annihilation of every civilized world. Kirk and Spock, two completely different and unyielding personalities, must find a way to lead the only crew, aboard the only ship, that canstop him. "The wait is over."

    Spock, and Dr. McCoy struggle to establish new lives apart from each other and the starship. The newly-promoted Admiral Kirk is placed in charge of a specially-created Starfleet division and attempts to defuse a critical hostage situation; Mr. Spock, who, in the midst of a teaching assignment on Vulcan, finds the one thing he least expected; and Dr. McCoy, whose unerring instinct for trouble lands him smack in the middle of an incident that could trigger an interstellar bloodbath.

    Spock's mother, Amanda Grayson, is dying, and Spock returns to the planet Vulcan where he and Sarek enjoy a rare moment of rapprochement. But just as his wife's illness grows worse, duty calls Sarek away—once again sowing seeds of conflict between father and son. Yet soon, Sarek and Spock must put aside their differences and work together to foil a far-reaching plot to destroy the Federation—a plot that Sarek has seen in the making for nearly his entire career. The epic story will take the crew of the U.S.S. Enterprise™ to the heart of the Klingon Empire, where Captain Kirk's last surviving relative has become a pawn in a battle to divide the Federation... and conquer it. With Sarek's help, the crew of the Starship Enterprise™ learns that all is not as it seems. Before they can prevent the Federation's destruction, they must see the face of their hidden enemy—an enemy more insidious and more dangerous than any they have faced before...

    Spocks! One is the true First Officer of the Enterprise. The other is his complete opposite, a traitor whose very existence poses a grave threat to the crew, the ship, and the Federation itself. One of the Spocks must die. But which one ... ?

    Leonard McCoy thought he had it all. But when the woman he loved betrayed him, McCoy fled to Starfleet, hoping to lose his pain in the depths of space. Now, more than forty years later, the "Enterprise"TM and her crew are ordered to transport a group of mediators to the planet Ssan, a world where assassination is a time-honored tradition, and McCoy is surprised to learn that his ex-wife, now remarried, is one of the mediators. And before he can come to terms with his conflicted feelings for his former love, she and Captain Kirk are trapped on Susan, and McCoy is caught in an explosive civil war, the only one with the power to save the woman who once nearly destroyed him.

    Now they want them back....Captain Kirk is stunned when the Federation receives an urgent plea for help -- from the Klingon Empire. A mysterious starship has invaded Klingon space and resisted all their efforts to destroy it. Establishing contact with the stranger's ship, Kirk discovers that it is only the vanguard of a vast alien fleet obsessed with conquering the Klingons, the Federation, the Romulans, and all who dwell in the space that was once their own.The Invasion has begun....

    For his part, Captain Spock must make the toughest decision of his Starfleet career.

    In their relentless quest for technological perfection, they have destroyed entire star systems, enslaved countless people, and, in a single brutal attack, decimated Starfleet's mightiest vessels. Answering a distress call from a planet under attack by the Borg, the U.S.S. Enterprise meets Delcara, the lone survivor of an alien race the Borg obliterated. Blinded by hatred, Delcara seeks the ultimate revenge, the complete destruction of her race's executioners. But the U.S.S. Enterprise crew learns that Delcara's vengeance carries a terrible price, for once unleashed, the destructive force she commands will annihilate not only the Borg, but countless innocents as well.

    Now, as an ancient and forbidden technology tempts mankind once more, Captain James T. Kirk of the Starship Enterprise™ must probe deep into the secrets of the past, to discover the true origins of the dreaded Eugenics Wars—and of perhaps the greatest foe he has ever faced. 1974 A.D. An international consortium of the world's top scientists have conspired to create the Chrysalis Project, a top-secret experiment in human genetic engineering. The project's goal is nothing less than the creation of a new, artificially improved breed of men and women: smarter, faster, stronger than ordinary human beings, a super-race to take command of the entire planet. Gary Seven, an undercover operative for an advanced alien species, is alarmed by the project's objectives; he knows too well the apocalyptic consequences of genetic manipulation. With his trusted agents, Roberta Lincoln and the mysterious Isis, he will risk life and limb to uncover Chrysalis' insidious designs and neutralize the awesome threat that the Project poses to the future. But he may already be too late. One generation of super-humans has already been conceived. As the years go by, Seven watches with growing concern as the children of Chrysalis—in particular, a brilliant youth named Khan Noonien Singh—grow to adulthood. Can Khan's dark destiny be averted—or is Earth doomed to fight a global battle for supremacy? The Eugenics Wars: Volume One is an engrossing and fast-paced thriller that explores the secret history of the twentieth century—and the rise of the conqueror known as Khan.

    For on this alien world, he is drawn into an impossible quest, leading him to consequences both heartwarming and disastrous, as he finally dares to pursue his fondest desire: to become human.

     Elsewhere, deep in the Gamma Quadrant, an ancient mystery is solved. One of Earth's first generation of starships, lost for centuries, has been found dead and empty on a desolate planet. But its discovery so far from home has raised disturbing questions, and the answers harken back to a struggle for survival that once tested a captain and her crew to the limits of their humanity. From that terrifying flashpoint begins an apocalyptic odyssey that will reach across time and space to reveal the past, define the future, and show three captains -- Jean-Luc Picard of the U.S.S. Enterprise, TM William Riker of the U.S.S. Titan, and Ezri Dax of the U.S.S Aventine -- that some destinies are inescapable.