Detectives in Great Neck, NY

Comprehensive list of private detective agencies and investigators servicing Great Neck, NY.

Business Listings

Guardian Investigation Group. delivering a huge spectrum of investigative services and expert testimony to the insurance and legal professions.


Over 50 combined years of professional detective and investigative services. We are law enforcement experienced and trained in all kinds of investigative work including insurance fraud, matrimonial, criminal, human resource background checks,computer forensics, accounting forensics, video surveillance and armed security.


Working with a world-huge network of investigators, and female operated, our mission is to assure every customer is delivered with reliable, professional, legally compliant investigations, with uncompromising quality and results. Fortune 500 Corporations, Small Business Owners, the Legal Community and Individuals retain our services because we reconcile their problems to supply them with peace of mind.



For more than fifty years, ALDONYS has worked on behalf of licensed private investigators, agency licensees and security guard companies as an advocate for the industry by raising the standards and skills of its members through education, improved standards and awareness.


We employ top people from various professional investigative backgrounds who can supply the most comprehensive, detailed and 100% accurate results.

  • The investigator was personable and professional.

The resources to provide the results you need. Private Eyez is a complete-service investigation company, delivering a huge array of proven, cost-effective investigative services to law firms, insurance firms, employers, private and public entities, and individuals.


We would like to take this opportunity to introduce you to P.M.C. INVESTIGATIONS & SECURITY. We are your one stop service agency with complete knowledge of your company's requirements and statement requirements. P.M.C. has maintained a relationship with over 150 law companies, several leading corporations, including Federal & State accounts, as well as numerous insurance carriers.


Company President Alan J. Yglesias and the Beacon Claims & Investigations. team are dedicated to founding a meaningful professional relationship with our customers, in which the customer's goals and needs are achieved in an efficient and cost effective investigation. Beacon's staff are focused on delivering a complete and results oriented conclusion to each and every assignment.