TOS films Mark Lenard portrayed Sarek in movies based on the original Star Trek series. In Star Trek III: The Search for Spock (1984), Sarek confronts James T. Kirk at his apartment, thinking that Spock placed his katra, or living essence, into Kirk's mind (since Kirk was the last person to be with the dying Spock), and asking Kirk why he did not return Spock to Vulcan. Unknown to either Sarek or Kirk, Spock had actually placed his katra in the mind of his friend Leonard McCoy for safekeeping. Kirk later discovers this through the security tapes during the last moments of Spock's life in his fight to save the Enterprise from Khan. Sarek asks Kirk to bring Spock's body back along with his katra to Vulcan; Kirk promises to do so. The Genesis Device regenerates Spock's body and restores his life; Kirk and his crew manage to get Spock off the planet and return him to his home planet of Vulcan. There, Sarek asks the priestess T'Lar to perform a fal-tor-pan, reuniting Spock's mind and body. Sarek thanks Kirk for the rescue of Spock, which took place at the expense of the destruction of the Enterprise and the death of Kirk's son. Kirk admitted if he did not try to save Spock, he would have faced a deeper guilt in his soul.
TOS films Mark Lenard portrayed Sarek in movies based on the original Star Trek series. In Star Trek III: The Search for Spock (1984), Sarek confronts James T. Kirk at his apartment, thinking that Spock placed his katra, or living essence, into Kirk's mind (since Kirk was the last person to be with the dying Spock), and asking Kirk why he did not return Spock to Vulcan Unknown to either Sarek or Kirk Spock had actually placed his katra in the mind of his friend Leonard McCoy for safekeeping. Kirk later discovers this through the security tapes during the last moments of Spock's life in his fight to save the Enterprise from Khan. Sarek asks Kirk to bring Spock's body back along with his katra to Vulcan; Kirk promises to do so. The Genesis Device regenerates Spock's body and restores his life; Kirk and his crew manage to get Spock off the planet and return him to his home planet of Vulcan. There, Sarek asks the priestess T'Lar to perform a fal-tor-pan, reuniting Spock's mind and body. Sarek thanks Kirk for the rescue of Spock, which took place at the expense of the destruction of the Enterprise and the death of Kirk's son. Kirk admitted if he did not try to save Spock, he would have faced a deeper guilt in his soul.