Lisa (1990)

14-year-old Lisa is raised by her unmarried mother Katherine who overprotects her by forbidding her to date until she's 16. In despair, Lisa and schoolmate Wendy make up a game that consists of inferring attractive men's phone numbers from their car ID and calling them anonymously. Lisa begins a passionate phone relationship with the last man, the handsome Richard...unaware that he is a sex maniac and a psycho killer..