Bruce Dern at age 27 plays a 19 or 20 year old.
Marcia Fowler drives a Triumph TR-4.
This AHH episode originally aired on January 31, 1964. Coincidentally, exactly a week later on February 7, 1964, The Twilight Zone aired its episode "Night Call", which was also about a woman receiving disturbing phone calls from an unidentified person. However despite the similarity of the titles and the basic premise, the characters, circumstances and endings of the two stories are very different.