Updated: March 16, 2022
BEHIND THE SCENES (INVADERS 5TH DIMENSION)
Lost in Space "Invaders from the Fifth Dimension" (Seaon One November 3, 1965)
Macabre aliens - quite literally talking heads - need a humanoid brain to replace a worn out computer in their spaceship.
They capture Smith, but quickly realize that his brain is unsatisfactory. The aliens release Smith so that he can bring
them somebody more suitable: "a small Robinson."