He has appeared as a reporter on HNN's Nancy Grace, the Larry King Show, MSNBC News, FOX News, Inside Edition, NBC's Dateline and the Dr. Phil Show. Armstrong is currently chief crime correspondent for Crime Report USA, and contributes to Films & Books Magazine, Advance Magazine, Canadian Money Magazine, Secure Net News, LINK World News Magazine, and EDI Weekly. Derek Armstrong is a member of the Canadian Association of Journalists (CAJ).