David C. Sullivan was 22 and a senior at the University of Massachusetts when he was found dead in his Meadow Street off-campus bedroom in Amherst on the morning of November 30, 2004. He had been shot multiple times, injuries investigators believed were from a rifle. Sullivan was majoring in Building Materials and Wood Technology and was expected to graduate in spring 2005.

Authorities quickly identified a suspect: 23-year-old Bryan Johnston of Westfield, a high school friend who graduated with Sullivan from Wahconah Regional High School in 2000. Investigators say Johnston called Sullivan that night to ask him to go out; Sullivan declined. It is reported Johnston then drove to the apartment, entered without invitation, and shot Sullivan while he sat in his bedroom. Johnston was later detained briefly after driving off the road, taken to a hospital, and arraigned there. He allegedly confessed to his parents, and his defense at trial asserted he was experiencing delusions related to paranoid schizophrenia at the time of the killing.

What details might clarify motive or what happened that night for anyone who knew David or Bryan?