In 1976, several Circleville, Ohio residents began receiving strange letters detailing personal information about their lives. Bus driver Mary Gillispie was accused of a supposedly non-existent affair with the superintendent of schools. The writer told Mary that he/she had been observing her house and knew she had children. It was postmarked Columbus, Ohio, but had no return address. Within eight days, Mary received a similar letter. She kept the letters to herself, until her husband, Ron, received one as well. The letter stated that if Ron did not stop his wife's affair, his life would be in danger.