When There’s Nowhere Else to Turn,
Our Private Eyes Can Help

Free Consultation!

Call 800-724-8080 or fill out the form
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Two Rings

Infidelity Investigations

Is your loved one cheating?
Discuss your circumstances with
an expert infidelity detective

Learn More

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Surveillance

We specialize in electronic
surveillance to obtain results
needed to win your case

Learn More

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Locate A Missing Person

Find a Lost Loved One.
Don’t leave it up to online
database searches to get results

Learn More

North American Private Investigators

We are a licensed and bonded private investigator firm that has been conducting professional investigations and surveillance worldwide for over 45 years. We have the private detectives, resources, and knowledge you need for any one of our personalized services. NAI has set the standard in the industry with our proven methods and results. Our private investigators have the credentials and expertise needed, having solved thousands of cases for our clients. We will gather the evidence needed to solve your case. With thousands of satisfied clients, we are the private eyes to count on for help.

Why We Are Better

North American Investigations has the best private investigators in New York City, America, and around the world. Being one of the oldest and largest firms in the nation, we have been conducting investigations and solving cases for over 45 years across the United States.  We have locations on Long Island, in New York City, in New Jersey, in Connecticut, and in Los Angeles and others stationed internationally.

Find Out Why We're Better

Read Our Private Investigation Reviews

9.5 of 10 star feedback at TrustPilot (58 Reviews)

Found my father! THANK YOU

Growing up I had never met my father.  But over the last couple of years I really had a burning desire to find my father.  After multiple unsuccessful attempts to look for him myself, I asked Darren and his team if they were able to find Read more “Found my father! THANK YOU”

Michael Choi

Thorough, Precise, and Detailed

Thorough, Precise, and Detailed I am an attorney and have utilized the services of North American Investigations since 1992 in a myriad of different types of cases ranging from divorce to locating missing persons, to interviewing witnesses to accidents, etc. I have found their work Read more “Thorough, Precise, and Detailed”

Ed waldman, Esq.

NAI Consistently Delivers

I am an intellectual property lawyer specializing in franchise and trademark matters. I have been using North American Investigators exclusively for over eight years in trademark infringement cases, and the investigators there have consistently delivered the evidence I needed to win at trial. More importantly, Read more “NAI Consistently Delivers”

Jeffrey Zucker

I highly recommend NAI

I highly recommend NAI for investigating a situation that you need to have done. Darrin explained the entire process in a very professional manner. This made me feel confident that his investigators would do a good job. The second day of surveillance, the investigator was Read more “I highly recommend NAI”

Audrey O.

Excellent work

It was excellent to work with Darrin and his team of professionals. They make sure that the client feels comfortable to share very sensitive information in order to develop the case. Very thorough and to the point. The communication between him and myself was very Read more “Excellent work”

OL

When There's Nowhere Else to Turn,

Our Private Eyes Can Help

Free Consultation!

Call 800-724-8080 or fill out the form
  • This field is for validation purposes and should be left unchanged.

When There's Nowhere Else to Turn,

Our Private Eyes Can Help

Free Consultation!

Call 800-724-8080 or fill out the form
  • This field is for validation purposes and should be left unchanged.

North American Private Investigators

We are a licensed and bonded private investigator firm that has been conducting professional investigations and surveillance worldwide for over 45 years. We have the private detectives, resources, and knowledge you need for any one of our personalized services.  NAI has set the standard in the industry with our proven methods and results. Our private investigators have the credentials and expertise needed, having solved thousands of cases for our clients. We will gather the evidence needed to solve your case. With thousands of satisfied clients, we are the private eyes to count on for help.

Two Rings

Infidelity Investigations

Is your loved one cheating?
Discuss your circumstances with
an expert infidelity detective

Learn More About Infidelity Services

camera icon

Surveillance

We specialize in electronic
surveillance to obtain results
needed to win your case

Learn More About Surveillance

Magnifier Logo

Locate A Missing Person

Find a Lost Loved One.
Don't leave it up to online
database searches to get results

Learn More About Missing Persons

Read Our Private Investigation Reviews

9.5 of 10 star feedback at TrustPilot (58 Reviews)

Found my father! THANK YOU

Growing up I had never met my father.  But over the last couple of years I really had a burning desire to find my father.  After multiple unsuccessful attempts to look for him myself, I asked Darren and his team if they were able to find Read more “Found my father! THANK YOU”

Michael Choi

Thorough, Precise, and Detailed

Thorough, Precise, and Detailed I am an attorney and have utilized the services of North American Investigations since 1992 in a myriad of different types of cases ranging from divorce to locating missing persons, to interviewing witnesses to accidents, etc. I have found their work Read more “Thorough, Precise, and Detailed”

Ed waldman, Esq.

NAI Consistently Delivers

I am an intellectual property lawyer specializing in franchise and trademark matters. I have been using North American Investigators exclusively for over eight years in trademark infringement cases, and the investigators there have consistently delivered the evidence I needed to win at trial. More importantly, Read more “NAI Consistently Delivers”

Jeffrey Zucker

I highly recommend NAI

I highly recommend NAI for investigating a situation that you need to have done. Darrin explained the entire process in a very professional manner. This made me feel confident that his investigators would do a good job. The second day of surveillance, the investigator was Read more “I highly recommend NAI”

Audrey O.

Excellent work

It was excellent to work with Darrin and his team of professionals. They make sure that the client feels comfortable to share very sensitive information in order to develop the case. Very thorough and to the point. The communication between him and myself was very Read more “Excellent work”

OL

Who We Help

Individuals

When Your Search Ends, Ours Begins

Businesses

Large or Small, We Can Help

Attorneys

Helping Firms & Private Practices

Investigators

Helping Others is Part of the Job

Surveillance Private Investigator

Why We Are Better

North American Investigations has the best private investigators in New York City, America, and around the world. Being one of the oldest and largest firms in the nation, we have been conducting investigations and solving cases for over 45 years across the United States.  We have locations on Long Island, in New York City, in New Jersey, in Connecticut, and in Los Angeles and others stationed internationally.

Find Out Why We're Better

Featured in the Following Media

North American Investigations New York Times
North American Investigations Featured in Vice Magazine
North American Investigations in the Wall Street Journal
Darrin Giglio Featured in the Liberation