Massachusetts Private Investigation
On The Mark
Investigation & Security Services

Massachusetts Private Investigator

Discreet and Professional Investigations in Massachusetts,  Rhode Island and nationwide.

MA Private Investigator Mark Chauppetta has been interviewed on countless radio and tv programs, including The Howard Stern Show, and profiled in Boston Magazine, and in the Boston Phoenix.


2015: New Show on the History Channel!
Mark Chauppetta will be starting in a new show on the History channel This fall!
Details to come.
April 2014: Appeared in the UK TV show Dead Famous DNA, conducting an investigation into the validity of a collector who had Adolph Hitler's bones and Evan Braun's hair.

November 2013: Quoted in the Globe on infidelity.

August 2013: New York offices of On The Mark, PI are coming soon.

Watch Mark's video "Confessions of a Private Eye Detective" via aol.

October 2011: Mark is profiled on, a site for up-and-coming Bostonians.

June 2011: Mark appeared on an episode of Chronicle on Channel 5 Boston in an episode called Cheaters. You can watch it here.

May 2011:

Lots of Talk Show Bookings After Arnold Schwarzenegger Cheating Scandal.

Mark has been interviewed on KFI-AM Bill Carroll Show in LA, WAPI News Talk Birmingham, AL, and Star 94FM, Atlanta GA about cheating.

On The Mark Investigations on the Howard Stern Show!

Mark and the Team were on the Howard Stern show talking about our cheating decoys business. More here.

Feb 2011: Mark Interview:

Check out this video of Mark being interviewed.

Connect with Mark on Facebook: On the Mark Investigations & Driven Entertainment Inc.

Sept 2010:

Mark is helping in a high profile missing persons case. News story on Channel 10 Providence.

Mark is quoted in an article on about the 6 warning signs that your husband has been cheating.

August 2010: Need some confidential advice from a PI? Check out my advice column at Ask the Dick.

June 2010:

Mark's New Book, Happens All The Time: Cheating in the Good OL' U.S.A. is now available!

2010 A Father's Fight

Lots of info on Mark's MMA fight to raise money for Duchenne MD, the documentary movie, and more at

March 1, 2008: I have opened a Florida investigations branch office of On the Mark. If you have a need for a private investigator in Florida for a cheating spouse, or any other purpose, please contact me. A hand picked, qualified Florida investigator will be dispatched to meet you needs.

November 1 2007: Mark is featured in a CBS 3 Springfield TV news piece about cheating spouses, cheating signs, and how the Mass Turnpike fast lane transponders track your movements and can get you caught cheating! [See it here].

Mark is profiled in the January 07 Issue of Boston Magazine!

Please help Mark in supporting research for Duchenne Muscular Dystrophy.
We have additional investigative resources available, so we are now running back-to-school special discounted investigation rates.  Call now for a quote and to discuss your needs! (508) 889-2882
Our Newest Service is the "Private Intervention". If you need someone to be confronted about their drug problem, domestic abuse problem, or other issues to help them change their life, call me and I'll tell you how I've helped people before.
Investigator Mark Chauppetta was interviewed on the WB Channel 56 news special Valentine's day edition as an expert on Cheating Spouses

On The Mark is a top Massachusetts and Rhode Island private investigation firm available to address all your investigation needs professionally, courteously and discreetly. We frequently work in the Boston metro area, but will travel wherever our cases take us.

On of our specialties is investigating cheating spouses, and our new specialty, cheater decoys. We do detailed background checks in Massachusetts and nationwide, on everyone from potential employees to cheating husbands/wives, and everyone in-between.

Cheating Investigations in MA and RI.

Suspicious Business Trips?

Is your husband or wife in Mass or RI on business? If you are worried about what is really going on, let us look into it, quietly and discreetly.

  • Are your concerned what may going on after hours?
  • Is he or she where they say they are?
  • Are they going back to the hotel room alone?

These are common concerns if your partner travels a lot. If things don't add up in your mind, let us at "On the Mark" do the dirty work and covertly check up on them.

We know the local landscape, and will get the facts on a suspected cheater in RI or MA. Infidelity investigations are our specialty.

Is that business conference to Massachusetts or Rhode Island a convenient excuse for your husband to rendezvous with a lover, or are you suspicious of his co-worker who is traveling with him? We will send a trained agent out to conduct surveillance and to put your mind at ease.

It is always better to know the truth, one way or the other.

Professional Witness

Are you worried about a situation or confrontation with a potentially hostile or unknown party?

Hire a professional witness to have your back, either in court or just to prevent an ugly situation from escalating. A professional witness can help you in domestic situations, business confrontations, or any situations where you can't afford to have someone lie about what really happened.

Advanced Surveillance Techniques

We employ the latest in GPS tracking technology in our surveillance investigations.  Worried about that internet date, or new babysitter? Strange noises or behavior from the neighbors? When in doubt, check them out.

Whether you are a private individual or a corporation, we have a GPS solution for you. We also assist other private detective agencies. On the Mark uses the most advanced in GPS Technology to track someone up to one foot away. This is done in real times position tracking over the internet. Call for a quote.

We are experts at finding missing persons, locating adoptive parents, long lost relatives, friends, classmates or witnesses. We have successfully located many persons for both private clients and law enforcement or court officers.

Comprehensive Private Investigation Methods

Our experience and skills encompass the widest range of investigative methods. We pride ourselves in using the "old fashioned" private eye techniques of hard work, relentless perseverance, and shoe leather when that is the best way to solve a problem. But we also use every modern advantage, such as DNA testing and computer forensic investigations. The answer is always "whatever it takes" to solve your problem. 

We do extensive investigative support for Massachusetts defense lawyers and have testified in court countless times.

We can do complete asset searches, as well as background checks that look for criminal records, marriage records, bankruptcies, and a host of other things that you are entitled to know about.

We gather intelligence and provide surveillance of all kinds. We're now doing home surveillance setups and "nanny cams".

We have extensive expertise at all security services, including bodyguard services and employee terminations.

We are also available as consultants for threat assessment, disaster planning, homeland security/anti-terrorism preparation and travel security consultation.

We work primarily in Massachusetts and Rhode Island, but also travel frequently to Connecticut, New York, Northern New England, and elsewhere across the country as needed.

To talk directly with a licensed RI/MA Private Eye, please contact Mark at (508) 889-2882. He can answer any questions you might have about your private investigation needs in MA or RI, or elsewhere in New England. Mention this site and "Web Offer #49" for a special, limited-time offer, discounted web rate.

Founding Investigator Mark Chauppetta ran a campaign for Massachusetts State Representative from the Plymouth 10th District in 2004. He keeps very busy with his investigative business, his internet radio show, his acting career, charity work, and his kids. He has not yet announced any future Brockton political ambitions.

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Investigator Mark Chauppetta is a licensed private investigator, and member of The United States Association of Professional Investigators, and the National Association of Investigative Specialists.

Mass License # MA P-228 | Rhode Island License # 4785

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