On the evening of Aug. 15, 2015, William Sandeson and his girlfriend went out for dinner together.
Sonja Gashus told Sandeson’s first-degree murder trial in Dartmouth that he asked her to go to her friend’s house that night because “he wanted to do a deal that would be the last deal.”
At the time, the two had been dating for about one year. She was aware that he sold marijuana and voiced concern to him, especially because he was starting med school that fall, she testified.
At around midnight, she said she received a text from Sandeson saying that it was OK for her to come back to his Henry Street apartment. She says she showed up within minutes of that text as her friend lived nearby.