Looking to invite Mark Pucci to your podcast, write a story or get a professional analysis of the case on TV? Please fill out our contact form.
Looking to invite Mark Pucci to your podcast, write a story or get a professional analysis of the case on TV? Please fill out our
About Us
Who We Are
With more than 25 years of experience, our Long Island–based headquarters and team of investigative professionals at New York Private Detective Services are a one-stop shop for all investigative needs.
Led by decorated, retired NYPD detectives, our firm combines law enforcement expertise with advanced private-sector techniques to deliver trusted, accurate, and confidential results.
We take pride in providing professional, discreet, and results-driven services that give our clients clarity and peace of mind. Whether your concern is personal, legal, or corporate, we approach each case with the same dedication and precision.
“We protect your interests and exceed your expectations every time — no investigation is too big or too small.”
Our Practice Areas
Our practice areas include:
We specialize in a full range of investigative services, including:
Accidental / Wrongful Death Investigations
Homicide Investigations
Missing Persons Investigations
Child Abduction Investigations
Cold Case Investigations
White Collar & Corporate Crime Investigations
Financial & Credit Card Fraud Investigations
Due Diligence Investigations
Cyber Crime & Computer Forensics Investigations
Adoption–Adoptee Location Investigations (Birth Parents / Children / Siblings)
Surveillance (Insurance / Matrimonial / Observational)
General Liability Investigations
Auto Accident Investigations / Accident Scene Diagramming
Written Statements / Recorded Statements
General Background Investigations
Pre-Employment Background Investigations / Screening
AOE/COE Investigations
Locates & Skip Tracing
Activity Checks
Alive & Well Verifications
Site Inspections and Service of Process
Whatever your investigative needs, we’ve got you covered — from complex criminal defense support to sensitive personal matters.
We represent individuals, attorneys, and corporations with the same level of professionalism and confidentiality.
No investigation is too big or too small — every client receives personal attention and dedication.
Our Mission & Approach
We approach every case with integrity, accuracy, and dedication to the truth.
Our goal is to protect your interests and exceed expectations with every investigation.
By combining proven law enforcement methods with advanced private-sector tools, we ensure reliable, court-ready results while maintaining complete confidentiality for our clients
Leadership & Oversight
Guardian Angel Investigations, LLC, was exclusively created to serve as a dedicated investigative firm for the National Institute for Law & Justice, Inc. (NILJ).
Its singular mission is the direct oversight of all case intake requests, evidence reviews, case approvals, and the management of all investigations funded by the NILJ — at no cost to victims or their families.
This partnership reflects our ongoing commitment to serve justice, truth, and public trust with professionalism and compassion.
What Our Clients Say
We take pride in delivering quality work and building long-term relationships with our clients.
Professional, thorough, and discreet. They delivered exactly what our case needed.
— Corporate Client, NYC
They found my sister when we thought all options were gone.”
— Private Client, Long Island
— Private Client, Long Island
We rely on NYPD Services for complex investigations that require courtroom-ready evidence.
— Attorney, New York