Star Trek: Yesterday's Son is a landmark 1983 science fiction novel by A. C. Crispin. It holds a special place in franchise history as the first non-movie novelization Star Trek book to make the New York Times Bestseller List. [1, 2]
đŸŒŒ The Plot
The story serves as a direct sequel to the critically acclaimed Star Trek: The Original Series season 3 episode, "All Our Yesterdays". [1, 2]
The Discovery: While studying data from the now-destroyed planet Sarpeidon, Mr. Spock discovers a cave painting showing a young man who looks distinctly Vulcan. He realizes that Zarabeth—the woman he loved while trapped in Sarpeidon's ice age 5,000 years in the past—bore him a son. [1, 2]
The Mission: With permission from the Vulcan leader T'Pau, Spock travels to the planet Gateway to use the Guardian of Forever time portal. Alongside Captain Kirk and Dr. McCoy, he ventures into the past to rescue his now 28-year-old son, Zar. [1, 2, 3, 4]
The Conflict: The mission is complicated when Romulan forces attack Gateway in the present day, attempting to seize control of the Guardian of Forever. The crew of the USS Enterprise must defend the portal while ensuring Spock and his son can return safely. [1, 2, 3]