Zachary Klein is the author of the critically acclaimed Matt Jacob mystery series. He has worked as a Vista volunteer and a private counselor for individuals, couples, and groups, and is a founder of the People’s School in Uptown Chicago, a school for high school dropouts. He also worked at Boston’s Project Place, a worker-run social service collective that provided free crisis intervention and other community services, as well as serving as the Clinical Supervisor for one of Boston’s methadone clinics.