Diane Genice Dye was 13 when she disappeared from her home in San Jose, California, on July 30, 1979. He tried to persuade her to stay, but she told him she planned to run away; he left her alone and that was the last confirmed time anyone saw her.

Diane was 5 feet 2 inches tall, about 110 pounds, with brown hair, hazel eyes, a scar on her chin and a healed fracture to her left forearm. She was wearing light blue corduroy pants and a blue shirt when she vanished. There were unconfirmed sightings over the years, including a December 1981 mall sighting about 50 miles from San Jose where the witness said Diane indicated she did not plan to return home and did not want her location known. Diane was once considered in the unidentified New Jersey case known as Princess Doe, but dental comparisons did not support a match; Princess Doe was later identified in 2022 as Dawn Olanick.

No confirmed resolution is recorded; anyone with information is asked to contact the San Jose Police Department.