• Our Team: Focusing On The Investigators

  • Susan J. Lajoie (President)


    Susan Lajoie, President and Investigator at LII, is an extremely experienced investigative administrative professional and inside legal investigator. Mrs. Lajoie conducts numerous inside investigations, preliminary investigations on field assignments, background & due diligence investigations, financial & asset checks, locate investigations, SMI & e-Discovery research, genealogy, and a host of other critical responsibilities. Susan is an expert computer database information retriever and provides preliminary information on numerous types of investigations. Mrs. Lajoie has a knack for locating individuals, witnesses, claimants, insureds, and generally anybody she is requested to find. Susan’s expertise and end results on locate and missing person investigation is legendary; there are few missing people she can’t find. And Susan’s preliminary investigation of field assignments is so detail oriented, our outside field investigators marvel at her competence and find their successes are directly linked to her investigative acumen. Her report management style has been complimented on by many clients. Susan is a member of NALI and has appeared in local, regional, and national news media in recognition of her knowledge in the profession.

    Susan is also Accounts and Finance Administrator for LII and is well known for her telephone manner and skills when communicating with just about anyone, especially the clients. She has been praised for her soft touch concerning accounts and client financial management and is responsible for maintaining superior customer relations with all existing clients. And she does it with class and integrity. Susan’s caring nature and her gregarious character make her a favorite at LII.

    Danielle Dusablon (Field Investigator)


    Danielle Dusablon came to work for LII in 2017 and to say that she has made a substantial impact with clients and her fellow employees would be an understatement. Level headed, street smart, and extremely affable, Danielle is a top of the line full-time field investigator. She came to LII with a passion to learn and has been producing great results ever since. In addition to investigating complicated death incidents, criminal defense cases, Danielle’s forte’ is SIU and coverage & liability insurance investigation in the Boston metro, Lowell, Lawrence, Brockton, New Bedford, and Fall River districts, tough areas known for insurance fraud. Ms. Dusablon’s matter of fact professional style and wide smile compliment her investigative talents in such a way that even a critical adversary ends up liking her. And the clients love her, as well as the effective results of her investigations that are documented in her reporting style. Intelligent and street smart, Danielle has a great sense of duty and responsibility to the client and to LII; and her investigation case results are reflective of that duty.

    John M. Lajoie, CLI, CCDI (Director & Investigation Management Consultant)


    John M. Lajoie is the director & investigation management consultant at Lajoie Investigations, Inc. (LII) and is known throughout the country for his superb skill and experience as a Certified Legal 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 board-certified legal investigator, a board-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.

    John is a member of many national and international professional investigator organizations and is frequently recognized by these groups for his outstanding work and contributions to the investigative profession and the community. John was a member of the prestigious BCPI certification board of the United States Association of Professional Investigators (USAPI) when headquartered in Washington, DC, served two separate terms as the President of the Licensed Private Detectives Association of Massachusetts (LPDAM), has served six terms as the Northeast Regional Director for the National Association of Legal Investigators (NALI), and was elected as the National Director of NALI in July 2019 to take office September 1, 2019. John was the Certified Legal Investigator (CLI) chairperson for NALI’s prestigious CLI program for 4 terms (go to www.nalionline.org for more information)and has remained on the CLI Committee for years. He has served many state and national associations in numerous capacities. In October of 2002, Mr. Lajoie was recognized nationwide as the National Investigator of the Year as conferred by the National Association of Investigative Specialists, based in Austin, TX. That same year, he was a finalist for the Council of International Investigator’s International Investigator of the Year. Lajoie, an award winning author, has produced numerous publications; and in August of 2005, Authorhouse published his critically acclaimed non-fiction book, Trials and Tribulations of a Real Life Private Eye, a writing of open and honest dialogue about the realities of private investigation told through experience, anecdotes, and true stories. Trials and Tribulations has been released in both softback and hardback editions.

    Mr. Lajoie’s intuition, investigative acumen, knowledge base, worldwide contacts, dedication to client, and incredible work ethic has earned him the sterling reputation as one of the most successful and effective contemporary private investigators in the United States. Respected and renown criminal defense attorney Peter L. Ettenberg wrote what follows to Lajoie after a high profile homicide investigation and trial in which Lajoie was the lead defense investigator:

    “You never gave up. You never got discouraged. If a roadblock appeared, you found a way around it. You took a great load of my mind by not having to think of everything. We’re a pretty good team together and I’m grateful for that. I can’t tell you how much I appreciate your thoughtful analysis of issues dealing with the investigation and how it all ties together. You clearly are a great PI!!”

    Lajoie was born and raised in Worcester, Massachusetts and now lives in central Massachusetts. He is intelligent, street smart, and has a keen & witty sense of humor. There is no question that Mr. Lajoie is dedicated to the profession in a way not many can emulate. Click here to view Mr. Lajoie’s current curriculum vitae.


    Sarah Staiti (Office Administrator)

    Sarah keeps the office running as smooth as silk. She is the face of the company and her friendly voice will greet you when you call. Sarah lives in central MA and is a lifelong resident of the Commonwealth.

    We have a network of investigators to handle discreet and sensitive investigation but due to the nature of their work, our dedication to client confidentiality, and the fact that revealing their names might compromise our investigations, we choose not to name these experienced and integral team members and respectfully request that you grant us your pardon.