Yvonne Marie Mestas was 15 when she vanished from Rocky Ford, Colorado after school on November 1, 1982. She was last seen leaving Rocky Ford High School walking home with a friend, Victoria Sanchez; neither girl was seen again. Yvonne was described as having black hair, warm brown eyes and a heart-shaped birthmark on one of her buttocks.

Initial inquiries produced no firm leads, and the case grew cold as media attention was minimal. In 2017 the Colorado Bureau of Investigation announced the case was being reopened after unspecified new information; age-progressed images were later circulated as part of renewed efforts. The disappearance remains an open investigation.

If anyone in Rocky Ford at the time remembers Yvonne, Victoria, the route they took home, or any detail about that afternoon, please come forward with information.