On a summer afternoon in Dorchester, 26-year-old Jamil Harmon was fatally stabbed in broad daylight. The attack occurred around 12:30 p.m. on August 18, 2010, while Harmon stood on Blue Hill Avenue between Seaver Street and Columbia Road. The street was reportedly busy at the time, yet the killing remained unsolved.

Harmon was a father; he left behind his young son, Treshawn Boyd, as well as parents Patricia Harmon and John Taylor, two sisters Quanisha and Shatera, grandparents, and many relatives and friends. In the weeks after the murder investigators publicly appealed for witnesses from the crowded scene, but no suspects have been publicly identified and no arrests were announced.

Who was on Blue Hill Avenue that day and might have seen something that could finally help bring answers to Harmon’s family?