Mary H. Hines was 84 and a retired school principal who lived on East Biddle Street in East Baltimore. On the morning of January 5, 2012, firefighters found her body after responding to a house fire. The medical examiner determined she had been stabbed multiple times and that the fire had been intentionally set, and her death was ruled a homicide.

Ms. Hines had been a fixture in the neighborhood for more than 50 years and taught in the city school system for over 30 years. Police distributed flyers and canvassed the area, and Metro Crime Stoppers offered a reward of up to $2,000 for information leading to an arrest. In the immediate aftermath investigators reported few leads and no identified suspects.

Does anyone who knew Mary or who was in the East Biddle Street area in early January 2012 have information that could help investigators?