Mark Silverthorn is a nationally recognized expert on consumer debt in Canada. He spent 12 years working as a collection lawyer for four of the ten largest collection agencies operating in Canada. Author of a book titled "The Wolf At The Door: What To Do When Collection Agencies Come Calling (2010), published by McClelland & Stewart. Routinely consulted by the media on issues concerning consumer debt and bill collectors. One seminar with Mark Silverthorn might save a debt-challenged Canadian tens of thousands of dollars.