This episode was an unsuccessful backdoor pilot for a potential spin-off series featuring the characters of Phobos and Deimos.
Part of the mind reader box is a circuit board from a pocket transistor radio attached to the outside.
The names of the two Martians posing as Earthmen, Phobos and Deimos, are also the names of the two moons of Mars.
Deimos was born in 1744 while Phobos was born in 1756.
Carroll O'Connor would guest star two months later in an episode of castmate Barry Morse's series The Fugitive (1963) titled Flight from the Final Demon (1964), which would air about two months after this program, but with Morse absent from that episode other than his credit listings.