
North American Investigations
Private Investigator
Primary
Mineola, NY
NY Office
New York, NY
Owner

Darrin G.
NAI's Chief Investigator, Darrin Giglio, is the leading expert in the private investigation industry. Giglio's caseload includes everything from surveillance to finding missing pets. With over 25 years of experience in the field, Giglio and his team have uncovered thousands of cases, leading clients to the truth they have been searching for. Giglio has received his Bachelors Degree in Criminal Justice and Minors Degree in Security Administration from St. Johns University. Additionally, he has ap
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About
North American Investigations is Long Island's leading industry expert in the private investigation field. Our firm offers an array of services, including surveillance, matrimonial/infidelity, criminal, missing person investigations, and background checks. We understand what our clients are looking for and know how to deliver the best results possible. NAI is here to bring you peace of mind. Observation and obtaining evidence is critical in our field, and all clients receive a report of our findings that is suitable for court along with video or photo documentation. Our video and photo evidence is time and date stamped, allowing you to know that you are being delivered accurate results by professionals. This supports and corroborates the investigator's observations, which can be utilized in the court of law for any legal situation. We are able to provide court testimony and have expert witnesses available as needed. Our Long Island private investigators provide an array of services.
Established in 1972. Established initially in 1972, NAI changed its name from EHS Investigations to NAI (North American Investigations) in 1992. NAI was started by Darrin Giglio, both the CEO and Chief Investigator. Our mission is to make sure our clients walk away with both peace of mind and the facts they deserve. NAI goes above and beyond to help assist their clients with their case, tailoring each investigation for your personal needs.
Reviews
5 reviews
I was more than happy to have engaged the services of this company. They handled
I was more than happy to have engaged the services of this company. They handled my request with discreet professionalism. There were timely and concise. Darrin was especially very kind and understanding of my request. He was able to bring my request to a positive conclusion within 48 hours. I highly recommend this company.
Services were very professional and thorough. I was informed during the entire i
Services were very professional and thorough. I was informed during the entire investigation and giving the option of what would be the best way to get the results I needed. I was giving a report with everything we requested. Very satisfied with the services. Thanks Darrin. Sincerely, The Ramseys
We hired a nanny who seemed to be fine for a while. Then we started to hear rumo
We hired a nanny who seemed to be fine for a while. Then we started to hear rumors that all these nannies from the area would meet at the park and let all the children run wild without much supervision. My Husband wanted to fire her on the spot but it was just a rumor so I didn't want to do that. My lawyer recommended Darrin and his company because they worked together before. After speaking with him, he told me that he had investigated a similar situation so I hired him. The investigation showed that the rumors were true and worse than I thought. I figured it was just gossip but I was upset once I found out exactly what was going on. I appreciate what Darrin was able to find out to make my decision of what to do easier.
This company literally regurgitated the same information that I gave them during
This company literally regurgitated the same information that I gave them during the intake. I paid them over $2600 upfront. They responded by copying and pasting my intake details and emailed it back to me as their "findings". NAI is dishonest and unprofessional. So much so that they misled me into believing an authentic investigation would take place. Looking back, I should have suspected that NAI wasn't a reputable company. They have less than 10 reviews. Their yelp has a total of four reviews. I also suspect that the handful of reviews are from NAI's family and friends. NAI ignored all my calls and emails for months. Until I posted a review. They insisted that they were still conducting its investigation. Which was a blatant lie. Steer clear of them.
Quick, Effective and Accurate Results!! Amazing Customer Service!! Highly Recomm
Quick, Effective and Accurate Results!! Amazing Customer Service!! Highly Recommended!
