Star Trek IV : the voyage home : a novel / by Vonda N. McIntyre ; screenplay by Steve Meerson & Peter Krikes and Harve Bennett & Nicholas Meyer ; story by Leonard Nimoy & Harve Bennett..
At last, Admiral James T. Kirk and the crew of the Starship Enterprise begin the long voyage home. But their trip is interrupted by the appearance of a mysterious, all-powerful intruder. Suddenly, Kirk, Spock, McCoy and the rest of the crew must journey back through time to twentieth-century Earth. For only there can they save the future-by rescuing the past!