With the help of the Vulcan leader T'Pau, Spock gets permission to use the Guardian of Forever, a portal through time constructed by a long-vanished race, to venture into the past. On another trip into history, on the planet Sarpeidon, Spock had loved a woman who could not return with him to the future, and now Spock wishes to see the son she bore him, 5,000 years earlier. But a Romulan attack on the Guardian's planet could interfere, unless the EnterpriseTM...

"Captain Kirk and Doctor McCoy accompany Spock to the Vulcan Academy Hospital in search of an experimental treatment for a badly wounded Enterprise crew member. But with Spock’s mother also a patient in the hospital, Kirk soon becomes involved in the complex drama of Spock’s family. Suddenly, patients are dying, and Kirk suspects the unthinkable—murder on Vulcan! But can he convince the Vulcans that something as illogical as murder is possible?...

"ADF syndrome, a deadly plague, threatens the planet Eeiauo, and an oath to a friend prevents Uhura from revealing a forbidden song which may contain a clue to prevention of the disease."--

Terise LoBrutto has lived among the Romulans as a spy for 8 years. When Dr. McCoy is captured she has to choose between saving him and maintaining her cover.

In the twenty-first century humanity has united after countless years of warfare, and turns toward the stars. But when an alien spacecraft crashlands 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...

A crisis on the planet brings the U.S.S. Enterprise and Mr. Spock to Vulcan in its time of need. The entire history of Vulcan and its innermost secrets are laid bare in the struggle to save the Federation and Vulcan.

James T. Kirk is the youngest man to be promoted to the rank of captain in Federation history. His crew consists of a first officer who finds him impetuous; a chief engineer who finds him arrogant; a chief medical officer who finds him trifling; and a helmsman who wants a transfer. But the young crew, which would later become the legendary space explorers, quickly puts aside their differences when a monstrous starship appears on their nascent flight...

Ravaged by a killer virus, the Romulans enter Canara, where the only antidote can be found. Desperate, they incite a victorious U.S.S. EnterpriseTM attack on one of their vessels, but Kirk discovers their ruse. Meanwhile the central computer has fallen in love with him, severely crippling the Starship EnterpriseTM. Somehow Kirk must overcome the lovesick computer and bring the antidote to the Romulans, before the galaxy crashes over the brink of war....

Commander George Samuel Kirk was aboard the Enterprise under the command of Captain Robert April before his famous son was born. Starfleet has just been founded and the Enterprise has just been built, and is sent on its first mission. The mission takes the Enterprise into the heart of hostile Romulan territory, where cosmopolitical machinations and advanced weapons technology will decide the fate of a hundred innocent worlds.