Calvin Ross was 26 when he was fatally shot on the evening of April 13, 2012, on Whittier Street in Detroit. He was an African-American male and one of many victims in a year marked by rising gun violence that strained the city’s resources.

Investigators encountered familiar obstacles: the inquiry was hampered by a lack of witnesses willing to come forward, a reluctance attributed to fear and distrust. No arrests have been announced, no suspects publicly named, and the case remains unsolved.

Anyone who knew Calvin, was in the Whittier Street area that evening, or has information that could help bring answers is asked to come forward.