Book 11

Yesterday's Son

by A. C. Crispin

Published 1 January 1984
The Romulans attack the planet Gateway, where Federation scientists are studying the Guardian of Forever -- the mysterious portal to the past.
The Starship Enterprise™ must protect the Guardian -- or destroy it. But Spock has already used the portal to journey to the past. On the planet Sarpedion, 5,000 years ago, Spock knew a beautiful, primitive woman. Now he has gone back to meet his son!

Book 39

Time for Yesterday

by A. C. Crispin

Published 1 April 1988
Time in the galaxy has stopped running in its normal course. That can mean only one thing -- the Guardian of Forever is malfunctioning. To save the universe, Starfleet Command reunites three of its most legendary figures -- Admiral James T. Kirk, Spock of Vulcan, and Dr. Leonard McCoy -- and sends them on a desperate mission to contact the Guardian, a journey that ultimately takes them 5,000 years into the past. They must find Spock's son Zar once again, and bring him back to their time to telepathically communicate with the Guardian. But Zar is enmeshed in troubles of his own, and soon Kirk, Spock, and McCoy find themselves in a desperate struggle to save both his and their world.

Book 96

Honor Blade

by Diane Duane

Published 1 October 2000
An electrifying thriller from bestselling author Diane Duane set in the Star Trek: The Original Series universe.

At last, the United Federation of Planets and the Romulan Star Empire have agreed to meet on neutral ground to attempt to resolve the tangle of intrigue and conspiracy that began with the hijacking of the U.S.S. Intrepid many years ago—but the meeting may be as dangerous as the war they hope to avoid.

As a show of good faith, the crew of the legendary Starship Enterprise™ has been ordered to attend the talks. In their informal charge is Romulan renegade Ael, the wanted fugitive who, with Kirk, served as a catalyst of the current troubles. Kirk must represent the interests of the Federation first and foremost, but the best approach to an agreement remains muddled in the ever-shifting Romulan order.

And the visiting Romulan party is as fractious and divided as their troubled world. Among the Romulan nobles in attendance are the hero and popular Senator Arrhae, who secretly helped rescue Dr. Leonard McCoy from a Romulan execution, and the very men and women who put McCoy on trial for treason—and tried to carry out the sentence.

As Kirk and crew attempt to renegotiate a delicate peace, and Romulans attempt to restore their tarnished honor, it becomes increasingly apparent that their only course of action is to prepare for war!

My Enemy, My Ally

by Diane Duane

Published 1 July 1984
Ael t' Rlailiiu is a noble and dangerous Romulan Commander. But when the Romulans kidnap Vulcans to genetically harness their mind power, Ael decides on treason. Captain Kirk, her old enemy, joins her in a secret pact to destroy the research laboratory and free the captive Vulcans. When the Romulans discover their plan, the Neutral Zone seethes with schemes and counter-schemes, sabotage and war.

Star Trek: Sarek

by A. C. Crispin

Published 1 March 1994

Rihannsu

by Diane Duane

Published 28 November 2006
At last, the United Federation of Planets and the Romulan Star Empire have agreed to meet on neutral ground in order to resolve the tangle of intrigue and conspiracy that began many years ago with the hijacking of the USS Intrepid. As a show of good faith, the crew of the legendary starship USS Enterprise has been ordered to attend the talks. In their informal charge is the Romulan renegade Ael, the wanted fugitive who, along with Captain James T. Kirk, served as the catalyst of the present troubles. On the other side, the visiting Romulan party is as fractious and disunited as their own divided world. As Kirk and his crew attempt to negotiate a delicate peace and the Romulans attempt to restore their tarnished honour, it becomes increasingly apparent that their only course of action is to prepare for the war that both sides hoped to avoid...

Sarek

by A. C. Crispin

Published 1 March 1994
The novel begins after the events of STAR TREK VI: THE UNDISCOVERED COUNTRY. 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 the 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 the 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...

The Star Trek: Signature Edition series continues with this thrilling adventure featuring Commander Spock, Captain Kirk, and the U.S.S. Enterprise.

Vulcan: linchpin member of the United Federation of Planets. Home to a civilization dedicated to o'thia, the ruling ethic of pure logic. But it was not always so; thousands of years before, Vulcans were a violent, warlike race, with tempers surpassed only by the planet's hot, arid sands. The philosopher Surak would show his people another way, teach them to reject their emotions and embrace logic and knowledge. The Vulcans would evolve and prosper, eventually exploring the stars and attaining further enlightenment as they encountered other cultures.

In the twenty-third century, Commander Spock, Captain Kirk, and the U.S.S. Enterprise are summoned to Vulcan when its people consider seceding from the Federation and returning to their isolationist ways. Vulcan's savage history becomes fully revealed as Spock, his father Sarek, and Kirk work to preserve the planet's future from anti-Terran factions with hidden agendas. The crisis is twofold for the half-human Spock—should Vulcan secede, he will be required to resign from Starfleet and return home, or forever sever ties with his homeworld.

Years later, a decades-old plot to destroy the Federation from within forces Ambassador Sarek from the bedside of his dying wife, Amanda. The ambassador's decision widens the long-standing rift between himself and Spock at a time when they must pool their resources together. While the Enterprise crew contends with Romulans, Klingons, and the mysterious Freelans, Sarek's only comfort comes from reading Amanda's journals, which reveal more about his human spouse, his son, and himself than he ever realized.

Romulan Way

by Diane Duane

Published 1 August 1987
They are a race of warriors, a noble people to whom honor is all. They are cousin to the Vulcan, ally to the Klingon, and Starfleet's most feared and cunning adversary. They are the Romulans -- and for eight years, Federation Agent Terise LoBrutto has hidden in their midst. Now the presence of a captured Starfleet officer forces her to make a fateful choice -- between exposure and escape. Between maintaining her cover -- and saving the life of Dr. Leonard McCoy. Here, in a startlingly different adventure, is the truth behind one of the most fascinating alien races ever created in STAR TREK -- the Romulans.