5 Best Private Investigator in New York (2026)

American Eagle Investigations is a Financial District firm offering marital and infidelity investigations, missing person searches, polygraph testing, background checks, and computer forensics, with its own site describing decades of combined experience and a founder with a law enforcement background. It runs extended hours seven days a week and positions itself around domestic and family cases alongside standard business investigations. Reviewers most often describe missing person and family reunification cases, along with polygraph appointments.

New York Intelligence Agency is a Midtown firm run by David Schassler, whose own site describes an award-winning background in investigative work and positions the firm around discretion for both business and personal cases. Reviewers describe fast turnaround, in some cases results within 24 hours, and consistently credit Schassler directly by first name for handling their case personally. The firm covers divorce-related investigations, asset searches, and general fact-finding work.

North American Investigations, operating locally under its parent brand PVTEyes, runs a Midtown Manhattan office as part of a wider firm with additional locations across New Jersey, Long Island, and several other states, led by Chief Investigator Darrin Giglio. The company's own site describes over 45 years in business with a focus on surveillance work. Reviewers consistently name Giglio directly, describing careful intake processes that go beyond a photo request into full behavioral profiles before surveillance begins.

Michael McKeever runs a solo private investigation practice from a Broadway office in NoHo, with his own site describing more than 30 years of experience across matrimonial, custody, and employment background investigations in Manhattan and the surrounding area. He's been the subject of outside press coverage on what the job of a private investigator actually involves, referenced on his own site. Reviewers describe a personal, hands-on approach, being the sole point of contact from first call to case closure.

Intuit Investigative Resources is a Rockefeller Plaza firm run by Eddie (Ed Dowd), working on both business and personal investigation cases with a stated focus on discretion and international reach. Reviewers describe the owner as personally involved in every case, with connections across New York law enforcement and corrections that help move cases forward. Several reviews are posted under names other than the actual client, a security precaution reviewers say the firm requested to protect sensitive cases.