New York Times best-selling authors Josepha Sherman and Susan Shwartz are fan-favorite chroniclers of Star Trek adventures. Exodus and Exiles, the first two parts of the Vulcan’s Soul Trilogy, introduced a brewing conflict that threatens the galaxy. In this final chapter, the secret history of the Romulans is revealed. And to stave off an escalation of galactic warfare, Spock and his allies race across time and space to confront a terrifying interstellar menace.

Just over a year ago, Captain James T. Kirk was lost to the Nexus while saving the U.S.S. Enterprise 1701-B from destruction. Aboard the science ship Intrepid II, Captain Spock, commanding some of his old crewmates, must face the loss of his closest friend. But while still in mourning for one friend, he must come to the aid of another. Decades ago, Spock had teamed up with David Rabin, the young son of a Starfleet Captain, to fight an attempted coup on Vulcan that would have turned the planet’s people away from the path of logic. Now a Starfleet officer, Captain David Rabin has been assigned to a harsh desert world much like Vulcan, where the Federation is determined to protect the lives of the inhabitants. But Rabin’s efforts are being sabotaged and he has asked for Spock’s help against the unknown forces that may well destroy the society he had come to save. While reflecting on his youthful adventure with David Rabin, Spock joins with Rabin to face and enemy out of their past and confront deadly Romulan treachery. In the process Spock will decide if the path of his life now leads back toward the family traditions he had once sought to escape.

Following their bestsellers Vulcan’s Forge and Vulcan’s Heart, Josepha Sherman and Susan Shwartz embark on a new trilogy chronicling the latter-day adventures of one of Star Trek’s most beloved characters, shedding new light on his world’s shocking history.
One year after the end of the Dominion War, the Romulan Star Empire comes under attack by a mysterious and alarmingly powerful enemy calling itself the Watraii, a species with a long-standing vendetta against the Romulans. Yet though they remain tenuously allied, the Federation, the Romulans and the Klingons are unready to become embroiled in another sustained conflict, forcing Ambassador Spock, Admiral Uhura, Admiral Chekov, Captain Saavik, and some unexpected allies to defy their governments in order to meet the new threat head-on. But the first blood drawn may prove to be among the dearest of all.

2329: Now a diplomat for the United Federation of Planets, Spock agrees to a bonding with Commander Saavik. More than a betrothal, less than a wedding, the sacred Vulcan rite is attended by both Spock’s father, Sarek, and a nervous young Starfleet lieutenant named Jean-Luc Picard.
2344: Ambassador Spock receives a top-secret communication from the heart of the Romulan Empire. Decades before, Spock had met and betrayed an honorable Romulan commander during the so-called “Enterprise incident.” Now she needs his help to prevent a catastrophe that could threaten the peace of the entire quadrant. Spock risks everything by traveling incognito to Romulus itself, but his covert mission becomes even more perilous when Saavik crosses the Neutral Zone to rescue him.
Enmeshed in the treacherous political intrigues of the Romulan capital, undone by a fire that grows ever hotter within his blood, Spock must use all his logic and experience to survive a crisis that will ultimately determine the fate of empires. Vulcan’s Heart is a powerful tale that explores an untold turning point in the ongoing saga of Spock and the world of Vulcan.