Experienced Private Investigators Around the Globe

NAI has provided thousands of clients with a wide variety of solutions, which means that when you hire us, you’re going to benefit from a team with the experience, knowledge, and skills best suited for your unique situation. Our expertly trained staff is comprised of former federal agents, police detectives, and seasoned private detective veterans. Whether your case is local, national or international, we have the resources to handle it.

Truly Private Investigations

Integrity and trust are cornerstones to our client relationships. You can rest comfortably knowing that our commitment to maintaining your privacy is our top priority.

Services We Offer

  • Surveillance Investigation Services

    Regardless of the reason, you need trained professionals to provide you with personal or electronic surveillance services. NAI’s private detectives are highly skilled at all types of surveillance, even vehicle tracking… read more about our Surveillance Investigation Services

  • Infidelity Investigations

    Infidelity investigations, sometimes referred to as “matrimonial” or “spousal” investigations, require a specific sequence of tasks, uniquely implemented for each individual investigation… read more about our infidelity investigation services

  • Child Custody Investigations

    Child custody and child support investigations are among the most important services NAI provides. Because we understand how important these issues are, you can be sure you will receive our best efforts for your case… read more about our child custody investigation services

  • Criminal Investigations Services

    NAI’s team of former police detectives and federal law enforcement agents are highly seasoned in criminal investigations. No matter how complex your case may be, our agency brings that background to bear in their investigation work… read more about our Criminal Investigation Services 

  • Background Investigations

    NAI offers a complete range of personal as well as business background investigation services to clients. Our experience researching and uncovering pertinent and relevant information related to a prospective spouse, business partner, employee or vendor consistently helps you make important decisions… read more about our Background Check Investigations

  • Fraud Investigations

    Fraud can be one of the most challenging issues to prove. The type of investigation services required when dealing with fraud cases demands experience only seasoned investigators can offer… read more about Fraud Investigation Services

  • Insurance Investigations

    Insurance investigations include fraud, yet there are many other types of insurance cases that require complex investigative work. And thanks to our four decades of experience, NAI’s insurance investigations team has what it takes for such work… read more about our insurance investigations

  • Missing Persons & Skip Tracing

    If someone you love or care about is missing, quite often NAI can provide the dedicated investigation services law enforcement agencies don’t have due to staffing or budgetary constraints… read more about our Missing Person Investigations

  • Additional Services

    In addition to the variety of primary investigation services NAI provides, our experience as a private detective agency spans a much wider range of services as well. If the services you need aren’t listed above, contact our team and ask how we may be able to help you… read more about the additional services we offer