Kind Nine Will Not Return is one of the Twilight episodes of the genuinely paranormal variety, where something happens which seems that it can't possibly have a rational explanation. Bob Cummings plays Cpt. James Embry, a World War II pilot who awakens in the desert next to the crashed remains of his plane, and his entire crew mysteriously disappeared into the vast desert. Sadly, the show commits that distinctly "twilight-zone" sin of having the lone character constantly calling into emptiness, looking for his lost crew members, in this case.
You may remember this from the show's pilot episode, "Where is Everybody?" where a Mike Ferris walked around a town basically having a conversation at the top of his voice with no one. In this episode, Embry is also calling repeatedly into the emptiness of the desert for his lost crew, at one point even squeezed into the back of the plane, still calling their names as though they had somehow managed to squeeze themselves into the cracks in the instrument panels. Isn't the back compartment of an airplane small enough so that you can pretty much see right away whether or not anyone else is in there with you? I don't know, maybe I'm wrong and those planes are bigger than I think.
At any rate, this episode actually deals with much heavier material than many other twilight episodes, as it ultimately turns out to be a very real depiction of some of the effects that many soldiers and military personnel suffer after being involved in conflicts.
As it turns out, Embry (played by Cummings, who has very real military experience himself, as does Serling) has a very real reasons for experiencing what he experiences in the show, and a very real and very revealing reason is given for what happens to him in the show. Much more moving than your typical twilight episode...