Charles Dickens' classic horror story has had a long history on radio, appearing in three separate versions on Suspense (1953, 1956, and 1959), as well as on Nightfall, Lights Out, Columbia Workshop, Hall of Fantasy, Seeing Ear Theater, CBS Mystery Theater,and Sleep No More. As "The Thing in the Tunnel," it was broadcast on Weird Circle and (perhaps a different version) on NBC Presents: Short Story, as "Hello Below There" (and perhaps as "The Train") on Beyond Midnight, as "Who Stopped the Train?" on The Creaking Door.
Phew. That's a lot of versions.
A railroad signalman continues to see a mysterious figure at the end of a tunnel. Why?
The Suspense episode below, from February 1959, stars Ellen Drew and Ben Wright, from a script by Irvin Reiss. The episode is introduced by William N. Robeson.
For the curious, the link below should take you the Project Gutenberg site for the original story by charles Dickens.