A surprise visit from Spock's father provides a startling revelation: McCoy is harboring Spock's living essence.
Admiral James T. Kirk
Dr. Leonard 'Bones' McCoy
Captain Montgomery 'Scotty' Scott
Cmdr. Hikaru Sulu
Cmdr. Pavel Chekov
Cmdr. Uhura
Cmdr. Kruge
Lt. Saavik
Ambassador Sarek
Dr. David Marcus
