American Investigative Services
“Great place to hire people to investigate basically anything from missing persons to insurance claims and being sued and to just about everything that can be investigated”
Best Private Investigators near Brookline, MA
1 of these agencies is based in Brookline; the others serve Brookline from towns including Boston (3 mi), Everett (8 mi) and Newton (3 mi).
6 open 24/7 · 9 open weekends · 11 rated 4.5+ · 4 show a license
Data verified October 28, 2026
Shield Investigations
“They are very professional and seemed totally interested in assisting me in any way possible.”
New England Security & Protective Services Agency
“I particularly appreciated that he assisted our attendees in finding their way to various events.”
Kraft Investigations Group
“Hire Kraft Investigation when you are looking for a qualified , honest competent and well respected PI Firm”
Dinatale Services
Bob Long Investigations and Security Consulting Group
“Bob has established himself as a trusted profesional who is respected by the law enforcement community, as well as many individuals in and businesses in the public and private sectors.”
The 15 agencies on this page are the private investigators listed for Brookline, MA. What each one states about its license, its specialties and the areas it covers comes from its own website; ratings and quotes come from public reviews.
Area overview: Brookline, MA
14 of the 15 agencies on this page have a rating, from 4.0 to 5.0 across 71 reviews; 11 are rated 4.5 or higher. 6 are open around the clock; 9 are open on Saturdays and 8 on Sundays. 4 show a license on their websites and 3 have a BBB rating of A or A+. 9 have ten or more years of experience, the longest 46 years. 6 offer urgent consultations; 2 offer a free initial consultation and 1 is family- or locally-owned. We have a website on file for all 15 of the agencies on this page; 14 publish a contact page and 10 list a public email. We count these figures across the agencies on this page; distances are straight-line, and hours and prices change, so confirm the details with the agency before you book.
Which investigators listed for Brookline describe their work online?
All 15 agencies on this page have a website on file. Those pages are where an agency states its license, the kinds of investigation it takes on, and whether it works mainly for attorneys, for companies or for private clients. That last point changes how a report gets written.
Vaglica Investigations
“I was being harassed and threatened almost every single day this year until Jill Vaglica PI found out that I wasn't the only one and that I was dealing with a vexatious litigious person who had me in the crosshairs.”
Owl Eye Investigations
“I could not have been more satisfied with the service I received from Owl Eye.”
Nardizzi & Associates
“Thanks for the help from these investigators in Boston, I was able to find out the truth about someone from some old criminal records.”
Ameriguard Protective Services
NWI Investigative Groups
Metropolitan Protective Service
Michael B Fixman Constable
Sannecure
Boston Computer Forensics
Why these companies made our list
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