Star Trek III: The Search For Spock (1984)

"My God, Bones. What have I done?"
"What you had to do, what you always do. Turn death into a fighting chance to live."

Director(s): Leonard Nimoy
IMDb Page: Star Trek III: The Search For Spock (1984)
Additional Link 1: Comic Adaptation
Additional Link 2: Audiobook Adaptation

Part of a Franchise?...
Star Trek III: The Search For Spock is the third of six movies to star all of the main Star Trek original series cast, and the second in a trilogy of linked films in the franchise. It is also the first of two Star Trek films to be directed by Leonard Nimoy.

Watch or Drop?...
The Search For Spock eventually sees Spock resurrected, because Leonard Nimoy regretted his decision to never play Spock again after Wrath of Khan. I'm not sure what the plans were for a third Star Trek film had Nimoy opted not to return as Spock, but what we have in The Search For Spock, is a decent sequel to Wrath of Khan. It's not a great film, but it works well at bringing Spock back from the dead. Definitely watch it if you enjoyed Wrath of Khan, but don't go into it thinking that it'll be as good.

Also See...
Star Trek: The Motion Picture (1979)
Star Trek II: The Wrath of Khan (1982)
Star Trek IV: The Voyage Home (1986)
Star Trek V: The Final Frontier (1989)
Star Trek VI: The Undiscovered Country (1991)
Star Trek: Generations (1994)