Description, clothing, tattoos, other identifying markings: A light blue snowsuit and a dark blue jacket.
Other characteristics: Caucasian female. Brown hair, hazel eyes. Allen smokes cigarettes.
Details at time of disappearance: Allen was last seen at The Homestead, a bar in St. Ignace, Michigan, on February 4, 1980. At 9:30 p.m. she left her table, saying she would be right back. She never returned and has never been heard from again. Allen left her car behind in the bar's parking lot, with her cigarettes, groceries and purse inside it. Few details are available in her case.