The second season of Star Trek: Discovery introduced a new generation of Star Trek fans to the pre-Kirk crew of the USS Enterprise. Capt. Christopher Pike (Anson Mount), Mr. Spock (Ethan Peck), and Number One (Rebecca Romijn) proved to be popular additions to the cast in season two. Yet the show left fans to wonder where the Enterprise had been during the first season when the Federation was at war with the Klingon Empire. John Jackson Miller’s new novel Star Trek: Discovery: The Enterprise War answers that lingering question through a stellar Star Trek adventure.