Melissa Ann Moore was 22 when she disappeared after a night out in Tulsa. She was last seen leaving friends at the Chi Omega sorority house on the University of Tulsa campus around midnight on March 25, 1984, intending to drive the few blocks to her apartment. Her car was found the next day on East Easton, roughly two miles from home; a witness later said they saw a man park the vehicle that afternoon, sit inside for a few moments, then lock it and walk away.

On April 17, 1984, workers inspecting bridges in Mayes County found Melissa’s body submerged in Pryor Creek. She was naked from the waist down, and the cause of death was ruled drowning with evidence suggesting sexual assault. Witnesses reported seeing a white man on the bridge above Pryor Creek who was driving an El Camino; composite sketches were produced but that person was never identified. Gary Alan Walker was investigated early on and later cleared.

A former OSBI agent said in 2010 that DNA from the case had been linked to a known suspect who drove a vehicle matching the El Camino description, but no arrest has been made and the case remains unsolved. Did anyone who knew Melissa or who was in the Tulsa or Pryor Creek area in March and April 1984 see a vehicle like an El Camino or remember a man acting suspiciously near the bridges?