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212.682.6094

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The Best in New York City

We provide professional security of the highest standards for a variety of occasions and do everything we can to meet your expectations.

Security Services

Experts in Investigation

When it comes to private investigation we are the best in the business – we provide thorough, discrete, and efficient investigations.

Investigative Services

Infidelity Investigation

If you fear your significant other may be unfaithful, we can conduct discrete investigation to provide you the information necessary to make a decision.

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Secure Jewelry Transport

Our agency will provide secure courier escorts to the homes of high end jewelry buyers, ensuring your protection.

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New York City Private Detective Services

Over 70 Years Serving Our Community

Since 1943, the John Shields Detective Agency has been New York City’s premier investigation and security firm. We have a reputation for being the most reliable full-service security firm in the area and pride ourselves on our ability to provide each client with attentive, responsive service. For a free estimate or consultation on any of our private detective services, please give us a call at (212) 682-6094 today!

Our premier services include:

Service Through Personal Relationships

While some private detective firms take a passive approach to assisting their clients, we have always believed that it is best to provide services that meet your specific needs and desires. When you contact our office, we will take the time to listen to your request and begin planning a course of action based upon your feedback. While we are based in midtown Manhattan, we serve all of New York including the five boroughs (Manhattan, Brooklyn, Bronx, Queens, and Staten Island), Westchester, Nassau County, Suffolk County, as well as New Jersey.

Trust Our High-Quality Investigation Services

While there are a number of private investigation firms in New York, our team licensed investigators to provide many services that other companies do not. From undercover security to VIP protections and asset protection, we have the skills and experience necessary you deserve.

Our detective agency stands above the rest because we offer:

  • Free estimates and consultations
  • Over 7 decades of experience
  • Employees that are licensed, bonded, and fully insured

Schedule Your Free Consultation Today!

When you need a private investigator or security detail, trust our team at John Shields Detective Agency. Your initial consultation with our staff is always free and we can schedule a meeting that fits your specific schedule. We can keep your valuables safe or uncover the truth for you. Whether we schedule a phone meeting or sit down face to face, we want to assess your needs and concerns and develop a course of action that can best address your concerns!

For more information, contact our office at (212) 682-6094 today!

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Why Choose Us?

  • Free Estimates/Consultations
  • Most Reliable In Our Field
  • Over 7 Decades of Experience
  • Licensed, Bonded & Fully Insured
  • Highly Trained & Fully Certified Staff
  • Expertise to Provide Best in the Business