Allyn Gibson wrote:
Remember that when Star Trek II was filmed, no one knew what "Remember" meant. We look at it now, from the perspective of Star Trek III and beyond...
One hot rumour between ST II and III was that it would be revealed that Saavik
would somehow be possessed by Spock's essence, helping her to become a suitable science officer replacement for Spock. And the script treatment, "Return to Genesis", had a vampiric-looking Spock image appearing in mirrors and other reflective surfaces.