On the night of October 30, 1990, 25-year-old Rhonda L. Hammersley was shot and killed outside the Petro Mart gas station in Cedar Lake, Indiana. She had just locked the station and was standing outside talking with co-worker Carrie Jillson, who was seated in her car, when a man stepped from behind the vehicle, raised a shotgun to Hammersley’s head and fired a single, fatal shot. The gunman then fired a second blast into the passenger door; Jillson dropped down into the front seat and felt the barrel against the back of her head before someone ordered the attackers to leave. Jillson drove to a nearby liquor store and called police.

The killing was later linked to a string of random shotgun attacks in Northwest Indiana associated with a perpetrator called the Shotgun Killer. Carrie Jillson viewed a lineup two weeks after the shooting and positively identified Ronald Jeffrey Harris as the man who shot Hammersley; she testified at trial that she was positive Harris was the killer. After a jury trial, Harris was convicted of felony murder in Hammersley’s death and of the attempted murder of Jillson, and received consecutive prison terms totaling ninety years.

Did anyone who knew Rhonda or worked near the Petro Mart in 1990 see anything unusual that night?