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

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