William Shatner shuttles between captain's console and director's chair for this fifth entry in the long-running series, as Spock (Leonard Nimoy) finds his loyalties tested when his rebel half-brother (Laurence Luckinbill) hijacks the Enterprise and her crew for their most dangerous voyage yet... to the heart of creation itself. Find out what God needs with a starship in this charming, exciting 23rd-century outer space epic! DeForest Kelley, David Warner co-star.