Child Custody & Family Law
Photographic, video, and witness evidence for custody disputes, infidelity investigations, cohabitation checks, and alimony matters in Massachusetts family courts.
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Est.
2022
Boston, MA
About SIG
Boston's Fully Licensed & Bonded Private Investigation Firm
Founded by Stephen R. Scanlon — a retired Massachusetts law enforcement official with over three decades of service — Scanlon Investigations Group (SIG) is a licensed Boston private investigation firm that brings unmatched professional expertise to every case.
During family law, divorce, civil, and criminal proceedings, clients and Boston's top attorneys need sensitive but powerful evidence to prevail. SIG is retained by individuals, law firms, insurance companies, and private businesses throughout Massachusetts.
- Divorce & Unfaithful Spouse Investigations
- Video & Photographic Surveillance
- Witness Statements & Interviews
- Fraudulent Claims Investigations
- Slip & Fall / Personal Injury / Civil Litigation
- Asset & Person Locate Searches
- Executive Protection / Residential Security
- Counter-Detection Electronic Surveillance
What We Do
Private Investigation Services in Boston, Massachusetts
SIG provides in-depth, tailored investigations — delivering factual, court-admissible documentation for your case, conducted with complete discretion throughout Greater Boston and all of Massachusetts.
Video & Photographic Surveillance
State-of-the-art surveillance deployed discreetly across Boston and Massachusetts. All evidence is court-admissible and professionally documented.
Learn moreCriminal & Civil Investigations
Assisting defense attorneys and private clients with witness statements, database searches, and crime scene evidence review for criminal and civil proceedings.
Learn morePerson & Asset Locates
Database, social media, public records research, and field interviews to locate missing individuals and hidden assets across Massachusetts.
Learn moreWitness Statements
Professionally conducted witness interviews and documented statements — leveraging 30 years of investigative experience for trial preparation across Massachusetts.
Learn more"Truth Is Power"
— Stephen Scanlon
Every case is handled to the highest professional standard. Call today for a free, confidential consultation with a licensed Boston private investigator.
Get in TouchWho We Are
Former Law Enforcement — 30+ Years of Investigative Experience
SIG's founder, Stephen R. Scanlon, retired from the Worcester County Sheriff's Office in 2022 after thirty distinguished years, holding the rank of Assistant Deputy Superintendent of Investigations.
He has worked alongside the FBI, Massachusetts State Police, and the Boston Police Department on high-profile cases — providing critical testimony at Superior Court, Federal Court, and Grand Jury levels.
SIG investigators collectively bring over 75 years of combined law enforcement experience to every private investigation case in Massachusetts.
Our Full StoryService Area
Boston Private Investigators Serving All of Greater Boston & Massachusetts
SIG provides private investigation services throughout Boston, MA and all surrounding communities. Whether you need a private investigator in Cambridge, Lowell, Newton, or anywhere across the state, SIG is ready to help.
Suffolk County
- Boston
- Revere
- Winthrop
- Chelsea
Middlesex County
- Cambridge
- Lowell
- Somerville
- Newton
- Malden
- Medford
- Waltham
- Framingham
- Everett
- Watertown
- Lexington
- Belmont
- Arlington
- Burlington
- Woburn
- Chelmsford
- Westford
- Billerica
- Marlborough
Essex County
- Salem
- Lawrence
- Peabody
- Haverhill
- Lynn
- Andover
- North Andover
Norfolk County
- Quincy
- Dedham
- Braintree
- Milton
- Needham
- Natick
- Wellesley
Worcester County
- Worcester
- Fitchburg
- Leominster
- Milford
- Shrewsbury
All of Massachusetts
Don't see your town? SIG serves statewide — including Plymouth, Barnstable, Bristol, Hampden, Hampshire, and Franklin counties.
Check Your AreaCommon Questions
Frequently Asked Questions About Hiring a Boston Private Investigator
What does a Boston private investigator do?
A Boston private investigator gathers factual evidence for legal, personal, or business matters. Services include video surveillance, infidelity investigations, child custody and family law support, criminal and civil investigations, asset locates, and witness statements. SIG handles all of these across Boston and Massachusetts.
Is Scanlon Investigations Group licensed in Massachusetts?
Yes. SIG is a fully licensed and bonded private investigation firm operating under Massachusetts state regulations, founded by Stephen R. Scanlon — a retired law enforcement official with over 30 years of service at the Worcester County Sheriff's Office.
How much does a private investigator in Boston cost?
Costs vary depending on the type of investigation, duration, and complexity. SIG offers a free, confidential consultation to discuss your case and provide transparent pricing. Call 617-875-3886 to get started.
Can a private investigator help with divorce or custody in Massachusetts?
Yes. SIG assists attorneys and individuals with divorce and child custody cases by gathering court-admissible photographic and video evidence, conducting surveillance, locating assets, and obtaining witness statements — all in full compliance with Massachusetts law.
What areas does Scanlon Investigations Group serve?
SIG serves Boston and all of Greater Boston, including Cambridge, Somerville, Newton, Lowell, Malden, Medford, Waltham, Watertown, Framingham, Lexington, Burlington, Woburn, Chelmsford, and all Massachusetts counties.
How do I contact SIG for a free consultation?
Call 617-875-3886 or email SRS2000@comcast.net. You can also use our online contact form. All consultations are completely confidential.