Best Private Investigators in Boston

Why These Private Investigators?

Our goal is to connect people with the best local experts. 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.

Reviewed Curated Top Picks 154 96 10

Our Selection Criteria:

  • 1. Availability

    Consistently approachable and responsive, so customers never feel ignored.

  • 2. Qualifications

    Building customer confidence with licensing, accreditations, and awards.

  • 3. Reputation

    A history of delighted customers and outstanding service.

  • 4. Experience

    Masters of their craft, based on years of practical experience and education.

  • 5. Professionalism

    Providing service with honesty, reliability, and respect.

Read more about our selection process

American Legal Investigative Services

American Legal Investigative Services was founded in 1985 in Boston as a security and investigation consulting firm. The company features a team of investigators, forensic accountants, cyber security experts, and physical security professionals to help clients mitigate risk during business transactions, internal fraud investigations, and during hiring processes. The company is accredited by the BBB and is equipped to handle background, white-collar, and criminal defense investigations as well as surveillance and litigation support. Clients include corporations, attorneys, and private equity firms.

Boston, MA 02114


DiNatale Detective Agency

DiNatale Detective Agency was founded in 1968 in West Roxbury and is currently one of the oldest privately-owned agencies in Massachusetts. The company is also fully licensed and was founded by former Boston Police detective and chief investigator Phil DiNatale, who was responsible for cracking the famous Boston Strangler case. The agency adheres to the principles of integrity, effectiveness, and professionalism. Phil's sons John and Richard currently operate the company and bring 75 years of combined experience to their work. Investigative services include civil and criminal cases, insurance fraud, corporate investigations, asset searches, and surveillance.

West Roxbury, MA 02132