| Horror, Thriller
Teenagers Libby and Kit innocently spend an evening doing random crank calls. These calls lead to murderous consequences.
Joan Crawford reportedly supplied her own film wardrobe and jewelry for her "cameo" in this film.
I saw what you did, and I know who you are.
When Kit and her father hear car radio news report of murder while making late night drive back from Libby's house, landscape appears to be in full daylight even though earlier night scenes don't suggest there is any significant moonlight.
Closing credit (over picture of phone lines): "The End of the Line."
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