Amy Marie Matthews was 24 when she vanished from her Plymouth Township home on a day between the end of December 1983 and the start of January 1984. A student at the Gordon Phillips School of Beauty Culture in Norristown, she left intending to attend class but never arrived. Without a car, she may have planned to hitchhike; she has not been seen or heard from since.

Descriptions from the time note blond hair, blue eyes, a two-to-three-inch scar along her left jawline, a rainbow tattoo on her shoulder and a butterfly tattoo on her buttocks. When last seen she wore a gold chain with a star trinket and a ruby-and-diamond ring. Her bank accounts, arrest records and credit history show no activity after her disappearance.

Investigators later identified a person of interest, Jack Lee Colin Jr., who lived a few blocks from Amy’s school and had a history of violent crimes and psychiatric hospitalization. Colin’s car was seized and examined, but prosecutors called finding usable forensic evidence after so many years a long shot; he was not charged in Amy Matthews’s disappearance.

Foul play is suspected but the case remains unsolved; does anyone have information about Amy’s last known movements or who she might have been with that day?