Mark Barnett, 52, of Wichita Falls, Texas, was shot and killed on June 25, 2022. He was found in the driveway of a Cartwright Road residence with a gunshot wound.

Investigators determined that 50-year-old Jason St. Hilaire shot and killed Barnett and also fatally shot 52-year-old Concepta St. Hilaire in the backyard. Jason St. Hilaire then died of a self-inflicted gunshot in a vehicle in the front yard. The Wichita Falls Police Department said no other people were involved and the case was closed after the offender’s death.

Did anyone in the area know Mark Barnett or have information about his movements that day?