The night of the 2010 killings in Mattapan, Dwayne Moore said he called his friend, a young drug dealer, to score some marijuana. The friend, 21-year-old Simba Martin, told him to come over and pick it up. When Moore arrived, he said, the door to Martin’s apartment was ajar.
“I hear yelling,” Moore told police during an interview nearly two months after the quadruple killings on Woolson Street in Mattapan that left a 2-year-old boy dead. Someone began to curse.