Arnold, et al:
The Twilight Zone episode about Willoughby was a classic. I remember watching it as a kid.
Although not train-related, another of my favorite TZ episodes was "Monsters on Elm Street" -- a cautionary tale about the chaotic suspicions of neighbors to neighbors when the local electric grid goes haywire. At the end of the episode, we see that the disastrous calamity was caused by human-like aliens who manipulate the grid and prove that humans are their our worst enemy. In college (1961) I wrote and essay about that episode as a moral tale.
Rod Serling was a one-of-a-kind producer/writer/genius. Perhaps the closest equivalent TV series in our time is The X Files.
BTW, my favorite Fallen Flag is the Rock Island Railroad. It was the railroad that served my hometown (Peoria, IL) with its Peoria Rocket. That train is represented in my Lionel-oriented collection by a Sunset 3rd Rail model of a RI E8A as the Peoria Rocket and the MTH Aerotrain model -- which began life on the RI as the Peoria Rocket for a time but was soon re-assigned to suburban commuter service along the Joliet-Chicago route.
Mike Mottler LCCA 12394
(also a retired PBS TV station exec)