- [Opening narration - from "Where Is Everybody?" to "A Passage for Trumpet"]
- Narrator: 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 light and shadow, between science and superstition, and it lies between the pit of man's fears and the summit of his knowledge. This is the dimension of imagination. It is an area which we call the Twilight Zone.
- [Opening narration - from "A Thing About Machines" to "The Obsolete Man"]
- Narrator: You're traveling through another dimension, a dimension not only of sight and sound but of mind. A journey into a wondrous land whose boundaries are that of imagination. That's the signpost up ahead - your next stop, the Twilight Zone!
- [Opening narration - season 4 & 5]
- Narrator: You unlock this door with the key of imagination. Beyond it is another dimension - a dimension of sound, a dimension of sight, a dimension of mind. You're moving into a land of both shadow and substance, of things and ideas. You've just crossed over into the Twilight Zone.
- [Opening narration - from "Mr. Bevis" to "A World of His Own"]
- Narrator: You are about to enter another dimension. A dimension not only of sight and sound, but of mind. A journey into a wondrous land of imagination. Next stop, the Twilight Zone!
- [Opening narration - season 3]
- Narrator: You're traveling through another dimension, a dimension not only of sight and sound but of mind. A journey into a wondrous land whose boundaries are that of imagination. Your next stop, the Twilight Zone!
- [opening narration - from "King Nine Will Not Return" to "Nervous Man in a Four Dollar Room"]
- Narrator: You're traveling through another dimension - a dimension not only of sight and sound, but of mind. A journey into a wondrous land of imagination. Next stop, the Twilight Zone!