It was a cold night in New Haven, Connecticut, in February 2021 when lead detective David Zaweski and his colleague Steven Cunningham arrived at the crime scene. Det. David Zaweski: The patrol officers had already been

Kevin Jiang was a 26-year-old Yale graduate student, an Army veteran, and, his friends say, a man of faith who volunteered with the homeless. He seemed to have no enemies, and no one could figure out