Ursula Curtiss

As Aunt Alice, Ruth Gordon applies for the job of housekeeper in the Tucson, Arizona home of widow Claire Marrable (Geraldine Page) in order to find out what happened to a missing widowed friend, Edna Tilsney (Mildred Dunnock). The crazed Page, left only a stamp album by her husband, takes money from her housekeepers, kills them, and buries the bodies in her garden. Alice is a widow too. So is neighbor Harriet Vaughn (Rosemary Forsyth). Lots of widows here. (imdb)

Teenagers, Libby and Kit, innocently spend an evening doing random prank calls. These calls lead to murderous consequences.

Two teens, Lisa and Kim, are playing games making prank calls on the phone. But when they call Adrian Lancer who has some mental problems, and say "I saw what you did", they ignite a human time bomb. Adrian has just killed someone and thinks they saw him do it. Now he is trying to find them. (imdb)