Despite performing relatively well, 1979's Star Trek: The Motion Picture almost killed the franchise for good. It was too expensive and too inert for Paramount's liking ... but the studio was willing to roll the dice on Gene Roddenberry's creation one more time. And everything was riding on The Wrath of Khan's success.
Even though we've been living with Star Trek II: The Wrath of Khan for 30 years, we're still learning new things about the second Trek feature. And one new nugget adds a haunting element of sadness to a would-be intergalactic despot.