John M. Lajoie is known throughout the country for his skill and experience as a private investigator, and for his dedication to the field of professional private investigation. Lajoie has turned the one-man operation he began in 1989 into one of the largest investigative firms in the Commonwealth of Massachusetts . John is a certified legal investigator, a certified criminal defense investigator, and a board certified professional investigator. His case experience has ranged from high-profile homicides to simple auto accidents, and his client base from the rich and famous to the homeless and indigent.