Marcia Katherine Matthews, known as Pepper, was 25 when she was found unconscious along Interstate 71 near mile marker 162 in Richland County, Ohio on June 12, 1985. She suffered severe head trauma, including a fractured skull, and died of her injuries on June 15, 1985. At the time she was 5 feet 7 inches, about 130 pounds, with black hair and brown eyes.

Marcia was last seen at the Union 76 Truck Plaza near Ohio Route 97 around 3:00 a.m., a truck stop frequented by long-haul drivers; witnesses said she entered a semi-truck bearing an Arkansas logo. Her body was found roughly two and a half hours later with injuries investigators concluded were not consistent with a fall from a moving vehicle and suggested she had been beaten. She had no identification and was identified via fingerprints from a December 1984 arrest for soliciting at the same truck stop.

Her death is one of several mid-1980s killings of sex workers found near Ohio interstates with blunt force trauma. Some investigators speculated about a serial offender using the CB handle Dr. No. DNA was collected and analyzed, but no arrests have been announced and the case remains open. If anyone knew Marcia, the truck she entered, or drivers using the Arkansas-marked rig or the handle Dr. No, contact law enforcement with what they know.