On August 4, 2011, in Fort Washington, Maryland, the bodies of 20-year-old Frank Lamar Harris and his 56-year-old mother, Patricia Harris, were found inside their home on the 11800 block of Hickory Drive. Both had been shot to death in what police described as a double homicide. The victims were discovered by Frank’s father and Patricia’s husband and were found posed on a sofa, arranged as if they were asleep.

The investigation focused on a family member. Twenty days after the discovery, police arrested Quindell Mercer, Patricia’s son and Frank’s step-brother. Prosecutors presented handwriting analysis and DNA evidence tying the 35-year-old to the crime. A jury convicted Mercer of two counts of second-degree murder and related handgun charges in November 2012, and he received a lengthy prison sentence in January 2013.

Who in the Fort Washington community might have known details about Frank’s life or family relationships that could shed light on what led to this double homicide?