A deliberately set apartment fire in Chicago’s South Shore claimed four lives on August 24, 2016, including 3-month-old Melanie Watson. The blaze began in the early hours of August 23 on the building’s third floor, where Melanie and the other victims were found. Melanie was transported to a hospital but died en route.

Also killed were Melanie’s sister Madison Watson, age 4, 7-year-old Shaniya Staples, and 56-year-old neighbor Kirk Johnson. Investigators described the fire as suspicious and arrested Reginald Hester, who was charged with four counts of first-degree murder and arson. The fire displaced numerous residents in the building.

Who in the neighborhood might have information about activity on that third floor the night the fire began?