Teresa Marie Byers was 18 when she was last seen in Kilgore, Texas, in November 1979. She disappeared under suspicious circumstances and authorities have long considered the case endangered and unresolved.

Byers was about 5 feet 4 inches and 100 pounds, with brown hair and brown eyes, and a cross-shaped scar on her left hand. The Texas Rangers and the Texas Missing Persons Clearinghouse have been involved, but investigators say no substantial leads have emerged. Reports note she had lost contact with her family and that the circumstances of her disappearance suggest something untoward may have occurred.

Anyone who knew Teresa, her movements in Kilgore in November 1979, or who has information that could help investigators is asked to contact local authorities.