"Her name is Nan Adams. She's twenty-seven years old. Her occupation: buyer at a New York department store, at present on vacation, driving cross-country to Los Angeles, California, from Manhattan. [Narration interrupted by character action and dialogue.] Minor incident on Highway 11 in Pennsylvania, perhaps to be filed away under accidents you walk away from. But from this moment on, Nan Adams' companion on a trip to California will be terror; her route - fear; her destination - quite unknown."
After a blowout, Nan Adams repeatedly sees the same hitch-hiker. She tries to run over him, only to be told by a sailor to whom she's given a lift that there was no one on the road. She calls home and learns her mother suffered a nervous breakdown after the death of her daughter in a car wreck. Nan returns to her car, where the hitch-hiker - his purpose and identity known - awaits."Nan Adams, age twenty-seven. She was driving to California, to Los Angeles. She didn't make it. There was a detour - through the Twilight Zone."
Notes: First of two intros without the word "the" (the other is in "A World Of Difference").