Gordon Campbell, 57, was found dead after a shooting in Cincinnati’s Winton Hills neighborhood on May 27, 2013. His killing was later tied by authorities to a string of contract-style homicides and broader organized criminal activity affecting the city.

Investigators linked Campbell’s death to a planned killing spree that involved multiple suspects; charges in the wider probe included murder, aggravated murder, and conspiracy. A group of individuals — among them a 14-year-old — was charged in connection with these killings, but authorities noted difficulties in pinning clear evidence to each person because of the number of people involved and the coordinated nature of the crimes.

The case underlines the reach of organized violence in the area and the challenges prosecutors faced assembling the connections between incidents. If anyone knew Gordon Campbell, his routines, or witnessed suspicious activity in Winton Hills around late May 2013, please share what was seen or heard.