Interesting similarity in physical characteristics to human beings in head, trunk, arms, legs, hands, feet.

Samuel Conrad has found The Twilight Zone.This episode was based on Paul W. Fairman's "Brothers Beyond the Void", published in the March 1952 issue of Fantastic Adventures and also included in August Derleth's 1953 anthology collection Worlds of Tomorrow.

In this renowned short story, Sam Conrad remains on Earth and it is the lone pilot Marcusson who has the too-close encounter with smaller, more alien Martians.

He installed the apprehensive, defeatist Conrad as the protagonist, easing his fears, only to have them ultimately confirmed; and he presented the Martians as a human-like superior race whose apparent benevolence would make their climactic treachery seem even more shocking, as well as decrease the budget that would have been expended on costumes and makeup.

Additionally, a set of four lights on the wall of the inside of the space ship are reuses of the Krell power gauges from the same film.

Actor Vic Perrin was later the "Control Voice" of The Outer Limits, and—like Oliver, Morrow and Comi—would also become another veteran of Star Trek.

Cat Yampell, comparing the show to other science fiction stories such as Planet of the Apes (also starring Roddy McDowall) and Slaughterhouse-Five, wrote: "Alien caging of humans provides commentary on the barbarity of the practice of turning sentient beings into public spectacles.

Coincidentally, that pilot also co-starred Susan Oliver in a similar role (Vina, a female has the task of making the captive feel more at ease).

The Star Trek animated episode "Eye of the Beholder" would also feature some of the crew of the USS Enterprise being placed in a zoo by the inhabitants of Lactra VII.