Star Trek III: The Search for Spock is a 1984 American science fiction film released by Paramount Pictures. The film is the third feature film of the Star Trek science fiction franchise and is the center of a three-film story arc that begins with Star Trek II: The Wrath of Khan and concludes with Star Trek IV: The Voyage Home. After the death of Spock (Leonard Nimoy) the crew of the USS Enterprise returns to Earth. When James T. Kirk (William Shatner) learns that Spock's spirit, or katra, is held in the mind of Dr. Leonard "Bones" McCoy (DeForest Kelley), Kirk and company steal the Enterprise to return Spock's body to his home planet. The crew must also contend with hostile Klingons, led by Kruge (Christopher Lloyd), bent on stealing the secrets of a powerful terraforming device.