Quinn D. Williams was 26 when he was shot to death in the early morning hours of March 4, 2011, in a residential neighborhood of St. Louis, Missouri. Responding officers found him with multiple gunshot wounds; he was pronounced dead at the scene and the case was ruled a homicide.

Investigators said the shooting appeared connected to a larger altercation involving several people, but the early hour and a lack of cooperation from potential witnesses hampered the inquiry. Police and local crime stoppers appealed to the community for information in the weeks after the killing, and media outlets highlighted the case, but no immediate arrests were announced and the homicide remained unsolved.

Anyone who was in that neighborhood on March 4, 2011, or who has information about an altercation that night is asked to come forward.