In the late spring of 1980, Diana K. Smith was a young woman of 21, with her life ahead of her. On the evening of Tuesday, May 20, she left her home for a casual night out, a familiar and simple pleasure. She told those she left behind that she was going bowling in Rock Island, Illinois, a bustling city on the banks of the Mississippi River, part of the Quad Cities metropolitan area. It was the last time she was ever seen alive. What began as a normal evening out for a young woman ended in a mystery that has now spanned more than four decades.
Six days later, on Memorial Day, May 26, 1980, a grim discovery was made miles away from the bowling alley Diana was believed to be heading toward. On the banks of the Rock River in the small, unincorporated community of Barstow, Illinois, the body of a white female was found. The remains were badly decomposed, a testament to the time that had passed and the exposure to the elements along the river's edge.
Authorities soon identified the young woman as Diana K. Smith. The discovery shifted her status from missing to the victim of a homicide.
The Illinois State Police and the Rock Island County Sheriff's Office immediately launched a joint murder investigation. The condition of Diana's body presented significant challenges for investigators in an era before DNA testing was a standard tool in forensic science. Determining a precise cause of death and collecting evidence would have been incredibly difficult. The location where she was found, a rural spot along the river, suggested her body may have been left there by her killer, far from the more populated area of Rock Island where she was last seen.
Investigators were faced with the daunting task of retracing the final hours of Diana's life. Who did she plan to go bowling with? Did she ever make it to the bowling alley? Who might she have encountered that night? These were the urgent questions police grappled with as they began their work. They appealed to the public for help, asking for anyone who was associated with Diana or who may have had knowledge of her activities around the time of her disappearance to come forward.
Over the years, Diana's case grew cold. Leads were exhausted, and without new information, the investigation stalled. Yet, law enforcement has not forgotten her. The murder of Diana K. Smith remains an open and active investigation. Her case is a fixture on the Illinois State Police's list of unsolved homicides, a silent appeal for the one piece of information that could break the silence that has surrounded her death for so long. Updates to the state police cold case files as recently as June 2021 confirm that authorities are still actively seeking tips from the public.
Decades have passed, and the world has changed immeasurably since that spring evening in 1980. Friends and family have grown older, and memories may have faded, but the quest for justice for Diana continues. The questions surrounding her final days are as pressing now as they were then. Someone, somewhere, knows what happened after Diana K. Smith left her home to go bowling.
The Illinois State Police continue to encourage anyone with information, no matter how insignificant it may seem, to come forward. Persons who may have knowledge of her murder or knew Diana in 1980 are asked to contact the Illinois State Police, Zone 2 Investigations at 815-632-4010, ext. 232.
