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Best Private Investigators in Boston, MA

Our Recommended Top 7

We did the research for you!

  • Licensing
  • User Reviews
  • Mystery Shopping Calls

Our goal is to connect people with the best local professionals. We scored Boston Private Investigators on more than 25 variables across five categories, and analyzed the results to give you a hand-picked list of the best.



7Top Picks

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featured provider = Featured Provider

1 University Road, Brookline, MA 02446 Rating

Review Sources

5.0 (3)
5.0 (2)

Why choose this provider?

Boston-based American Investigative Services, Inc. is a team of licensed, multi-disciplined, and multi-lingual private investigators. The team is backed with years of investigative experience and backgrounds in military intelligence and law enforcement. As private investigators, the agents can carry out investigations in areas such as domestic, pre-employment, criminal, civil, and legal. The agents at AIS have assisted corporations, law firms, and insurance carriers. The company also has specialists offering international investigation services like location and recovery and foreign emergency response.

  • Personal Safety
  • Threat Assessment
  • Access Control
  • Security Risk Analysis
  • Executive Protection Services

Boston, MA Rating

Why choose this provider?

Need help contacting a Private Investigator in Boston? Call our Concierge team at 848-Book-Pro (848-266-5776 from 6 am - 4 pm PT | Mon - Fri). They are standing by to help you get the service you need.

Boston, MA 02116 Rating

Review Sources

5.0 (2)

Why choose this provider?

Shamshak Investigative Services, Inc. is the Boston company of a private investigator with over 18 years of experience. Thomas P. Shamshak founded the private investigation and security consulting firm in 1999. He specializes in criminal defense investigations, cold case murders, and missing person cases. He is also a lifetime member of the Massachusetts Chiefs of Police Association and of the International Association of Chiefs of Police, and affiliated with the National Center for Missing and Exploited Children. The firm offers a range of investigative services, security consultations for corporations, schools, and individuals, and police procedure education and training.

Boston, MA 02116 Rating

Review Sources

4.3 (6)

Why choose this provider?

Bob Long Investigations Group LLC is a Boston firm providing investigative and security consulting services to high net worth clients in the legal, corporate, and financial communities. Founder Bob Long is certified in fraud investigation and homeland security and holds multiple degrees in criminal justice. He is also a member of the Ancient and Honorable Artillery Company of Massachusetts. The company's menu of services includes asset searches, business intelligence, character due diligence, computer forensics, corporate investigations, missing person cases, and more.

Tewksbury, MA 01876 Rating

Review Sources

5.0 (3)

Why choose this provider?

Driscoll Investigations Inc. is the full-service private investigation agency of Dennis J. Driscoll in Tewksbury. Former and current clients include individuals, corporations, insurance companies, and law firms in New Hampshire and Massachusetts. Owner Dennis Driscoll is a retired Boston Police Department officer and becomes personally involved in all cases taken up by the agency. The company is willing to work on investigations of all sizes in the areas of divorce, infidelity, criminal and civil cases, surveillance, insurance fraud, and protection. Free consultations can be requested over the phone.

Burlington, MA 01803 Rating

Why choose this provider?

Diamond Investigations in Burlington serves Boston, Burlington, and the entire state of Massachusetts as a fully licensed, bonded, and insured private detective agency. The company's founder and chief investigator has a 20-year record of experience in law enforcement. The firm is a member of the Licensed Private Detectives Association of Massachusetts and the National Council of Investigation and Security Services. The menu of services includes criminal, civil, theft, and burglary investigations, missing person cases, surveillance, event and corporate security, and mystery shopping. Customers can schedule a free consultation over the phone.

Boston, MA 02205 Rating

Review Sources

4.0 (4)

Why choose this provider?

Burke Investigation Services is the Boston investigative firm of constable and private investigator James F. Burke, who has over 20 years of professional experience in the field. The company was founded in 1998 and has since served thousands of customers in Boston and surrounding communities with a "proven track record of quality, reliability, and professionalism." Services include private investigations, constables and process services, and armed and unarmed protective services. James Burke is a member of the Boston Constable Associations and the Licensed Private Detectives Association of Massachusetts, among other professional groups.

Compare our Top Private Investigators

NameExpertise RatingAddressPromotionsLearn more
American Investigative Services, Inc.
1 University Road, Brookline, MA 02446Call for pricing
Shamshak Investigative Services, Inc.
Boston, MA 02116
Bob Long Investigations Group LLC
Boston, MA 02116
Driscoll Investigations Inc.
Tewksbury, MA 01876
Diamond Investigations
Burlington, MA 01803
Burke Investigation Services
Boston, MA 02205


  • Introduction

    Some cases grow cold without ever getting solved by the police, and others tend to be too unorthodox for the police since they're mainly limited to criminal cases. This is where private investigators come in.

    Private investigators, also known as PIs, offer a wide range of services, including finding missing persons, tracking marital infidelity, investigating theft, running background checks, verifying insurance claims, and collecting debts on behalf of their clients.

    PIs work on any case requiring extensive research and investigation. Their duties range from gathering vital facts and connecting clues to providing conclusive information regarding the case.
  • What is a private investigator?

    Private investigators are experienced individuals hired to carry out detective work. They are fact-finding experts who dedicate time and effort to gather evidence and reveal information that would be difficult to gain through ordinary means. Private investigators can either operate alone or work for an agency.

  • Are private detectives real?

    Yes, private investigators are real. They provide their expertise to anyone who needs an in-depth investigation for an important matter. Whether tracking a long-lost loved one, running background checks, finding missing persons, or conducting general research, private detectives operate with discretion and rarely make the news.

  • What do private investigators do?

    PI work involves a lot of information gathering and fact analysis. Their field assignments involve carefully following persons of interest, conducting surveillance, interviewing people, and, sometimes, going undercover to get more information. They use GPS tracking devices, video recorders, computers, and other technology to collect information.

  • How do private investigators work?

    Private investigators’ ability to conduct examinations and close cases without their targets knowing their involvement makes them very effective. A PI firm may have different personnel, each specializing in a particular field. From computer experts to web-data analysts and field officers, these agents work together to solve cases or complete an objective.

  • What is a private investigator allowed to do?

    PIs are civilians, so they're required to operate within the confines of the law. Private investigators search multiple online databases, public records, and open source files to collect information. However, they cannot bug phones or hack into online accounts to acquire protected information. They can conduct surveillance on people in public places, but they can't trespass into their homes or property.