New York City · Manhattan

Private Investigators Serving Manhattan

Discreet private investigation services throughout Manhattan for attorneys, insurers, employers, businesses and individuals.

New York CityManhattanConfidential35+ Years of Experience
Manhattan private investigation service area
Serving Manhattan

Investigative Experience for Manhattan

GSI provides experienced, confidential investigative support for matters requiring careful research, fieldwork and documentation. Assignments can be coordinated with our broader New York City and Long Island capabilities when a matter crosses borough or county lines.

Surveillance

Discreet field surveillance and documentation tailored to the facts and objectives of the assignment.

Surveillance →

Insurance Investigations

Investigative support for claims professionals and organizations handling suspicious or complex matters.

Insurance Investigations →

Litigation Support

Investigative assistance for attorneys and legal teams preparing matters for litigation and trial.

Litigation Support →

Background Checks

Background research for individuals and organizations, with broader nationwide capabilities where available.

Background Checks →

Serving Manhattan and the Greater New York City Area

Need investigative support outside Manhattan? Explore our New York City service area, Long Island, or contact GSI to discuss the geographic scope of your assignment.

Discuss a Manhattan Assignment

Contact GSI for a confidential review of your investigative needs.

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