From the Famous Writers Course. Part of the Famous Writers School in Westport, CT. I don’t believe the school or the course is in existence today.
Front cover of the facsimile script.
Inside, first page.
“There is a fifth dimension beyond that which is known to man. It is a dimension as vast as space, and as timeless as infinity. It is the middle ground between land and shadow — between science and superstition. And it lies between the pit of man’s fears and the summit of his knowledge. It is an area which we call The Twilight Zone.
Booker's Blog 