Joseph Stefano and Martin Landau planned for this movie to be the pilot for a new show similar in concept to The Twilight Zone (1959) and The Outer Limits (1963), but with much more focus on horror. The television station that aired this movie received complaints that the movie was too scary and disturbing, so the station scrapped the movie and the project.
Written under the title "The Black Telephone". Also, Nelson Orion's (Martin Landau's) housekeeper was a man and he had a blonde bombshell secretary in an earlier draft of the script.
The original pilot was called "The Haunted". When it was not picked up, footage was added, and it was released as this movie.
Robert Stevens started to direct the pilot, but became ill and had to be replaced by Producer Joseph Stefano.