Sci-Fi Action Adventure Thriller
A surprise visit from Spock's father provides a startling revelation: McCoy is harboring Spock's living essence.
Directed by
Leonard Nimoy
Written by
Harve Bennett
Christopher Lloyd
Cmdr. Kruge
Frank Welker
Spock's Screams
William Shatner
Admiral James T. Kirk
Miguel Ferrer
First Officer
Phil Morris
Trainee Foster
John Larroquette
Maltz
George Takei
Cmdr. Hikaru Sulu
Leonard Nimoy
Captain Spock / Elevator Voice
Walter Koenig
Cmdr. Pavel Chekov
Judith Anderson
Vulcan High Priestess
DeForest Kelley
Dr. Leonard 'Bones' McCoy
Branscombe Richmond
Klingon Gunner #2
James Doohan
Captain Montgomery 'Scotty' Scott
Kenny Endoso
Grace Lee Whitney
Commander Janice Rand (Woman in Cafeteria)
Robert Hooks
Admiral Morrow
James B. Sikking
Captain Styles
Nichelle Nichols
Cmdr. Uhura
Tom Woodruff Jr.
Mark Lenard
Ambassador Sarek
Chuck Hicks
Robin Curtis
Lt. Saavik
Stephen Manley
Spock...Age 17
Carl Steven
Spock...Age 9
Phillip R. Allen
Capt. Esteban
Jeanne Mori
Helm Officer
Merritt Butrick
Dr. David Marcus
Scott McGinnis
Starfleet Cadet "Mr. Adventure"
Eddy Donno
Vadia Potenza
Spock...Age 13
Joe W. Davis
Spock at age 25
Nanci Rogers
Bar Waitress (uncredited)
Paul Sorensen
Captain
Tom Morga
Don Charles McGovern
Jean Coulter

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