On the night of December 11–12, 2015, gunfire in a Brockton, Massachusetts neighborhood left 21-year-old Edward Andrews dead. Police, alerted by the city’s ShotSpotter system, found Andrews unresponsive on the sidewalk of Haverhill Street with a gunshot wound to his upper torso. He was taken to Signature Healthcare in Brockton and pronounced dead at 1:05 a.m.

Investigators quickly identified a suspect after a witness named Brahden Hill as the person who shot Andrews and fled on foot. State Police located Hill at an apartment in Dorchester and arrested him; a Plymouth County grand jury later indicted Hill on multiple counts, including murder and armed assault in connection with Andrews’ death. Two other people, Ashley Harrison and Rupert Weeks, were also indicted on charges related to attempting to mislead the investigation — Harrison for perjury and intimidation of a witness and Weeks for perjury about his whereabouts before and after the shooting.

What details about that night or the people involved might help explain what happened on Haverhill Street?