He unravels when he finds, and destroys, evidence during his Moon walk that he was, in fact, second to an obscure and discredited scientist from a century earlier.
An adaptation of Robert A. Heinlein's "They", the story revolves around a delusional patient in a New York hospital who believes his reality has been manufactured by an alien culture as a zoo environment for him as Earth's last survivor; his delusion turns out to be real.
Based on Graham Greene's "A Little Place off the Edgware Road", it tells of a man named Craven, who tries to convince others of his delusion that the dead have been rising from their graves; in a second story thread, there is a ripper-type killer on the loose.
A thinly disguised take on Agatha Christie's "And Then There Were None", stocked with characters out of a poor radio drama: the loudmouthed Texas Oil Man, The Effete Society Columnist, The Obsequious Backstabbing Assistant, and The Gold-Digging Ex-Chorus Liner.
They are invited to witness the reading of a dead mystic's will, and instead of bequeathing to them his riches, he hands them all death sentences for their part in ruining his life.
Taking form as a strange delusion, he claims that his childhood past can be viewed from his bedroom window, which is a portal into 1930s Binghamton, New York.
This story is a vignette, an extended sketch with its punch line turning on hunchbacked bell ringer Quasimodo's deafness.