Spock's Brain Star Trek : Season 3 Episode 1
TV-PG NBC 50m int(0)
Aired: September 20th, 1968 @ 8:30 PM EST on NBC
An alien female beams aboard the ship and, after incapacitating the rest of the crew, surgically removes Spock's brain. Kirk and the crew have just hours to locate and replace it before Spock's body dies.