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....