Tammie Jane Briley vanished from the side of Interstate 94 near Battle Creek in late summer 2000 after an argument with the man she was traveling with. Reports differ on the exact night—August 30, August 31, or September 3—but the consistent account is that the 37-year-old, who lived in the Mattawan area and sometimes used the surnames Hart or Hatfield, exited the truck around 11:00 p.m., leaving her purse and personal items behind. She was seen crossing from the westbound shoulder toward the eastbound lanes and was never reliably seen again.

Tammie was about five feet one inch tall, 100 to 130 pounds, with long light brown hair, hazel eyes, a scar on her right wrist and another on her face, seven piercings in one ear and one in the other. She was wearing a white or light tan shirt, blue cotton shorts and black sandals. Family members reported her missing on September 12, 2000, after repeated attempts to contact her failed; they say her disappearance was uncharacteristic and noted that no verified financial, employment, medical or government activity followed.

Authorities, including the Michigan State Police and the FBI, have treated the case as suspicious and it remains an open endangered missing person investigation. Did anyone driving on I-94 near Battle Creek in those late-summer nights of 2000 see Tammie or notice anything unusual?