The rule of thumb with Star Trek movies continues to be: even-numbered good, odd-numbered bad. The first Star Trek movie was a sub-Kubrickian snore. The third and fifth were marred by gratuitous action and sentimentality, respectively. On the other hand, Star Trek II: The Wrath of Khan was an entertaining swashbuckler highlighted by good performances, Kirstie Alley's debut and James Horner's score. Star Trek IV: The Voyage Home was a cute riff on the 20th century environmental crisis.
Paramount eventually noticed the pattern. Star Trek VI: The Undiscovered Country, the sixth mission of the starship Enterprise, was largely the work of director/screenwriter Nicholas Meyer, who wrote Khan, and executive producer Leonard Nimoy (who played Spock, of course), director of Star Trek IV. The sixth movie generally reflects Meyer's and Nimoy's concern for integrity.
Continue reading: Star Trek VI: The Undiscovered Country Review