About Dan Ribacoff

The Short Version

Dan Ribacoff — Daniel Ribacoff — is the founder and president of International Investigative Group, Ltd. (IIG), a licensed private investigation firm operating out of Manhattan, Long Island, Westchester, Boca Raton and London. He is a licensed private investigator, a certified polygraph examiner, a certified firearms instructor, a GIA Graduate Gemologist, and the author of I, Spy: How to Be Your Own Private Investigator.

If that list looks scattered, it isn't. Every one of those disciplines rests on the same skill: reading evidence that other people overlook and refusing to guess when a fact can be established.

The Investigator

International Investigative Group handles the full range of civil and corporate work — infidelity and domestic matters, corporate fraud and internal theft, due diligence on partners and acquisitions, skip tracing and asset searches, background investigations, surveillance, insurance fraud, and litigation support for law firms. Clients range from private individuals working through the worst week of their lives to multinational corporations that need a quiet answer before a deal closes.

The Polygraph Examiner

Polygraph is where Dan Ribacoff became publicly known. Through In Depth Polygraphs he has conducted thousands of examinations: attorney-directed testing, pre-employment and periodic screening for regulated employers, post-conviction monitoring, family and relationship matters, and testing conducted under production conditions for television. The methodology does not change when the cameras arrive — the standards are the standards.

The Firearms Instructor

Through Delray Firearms Training, Dan teaches the students most instructors skip: the ones who have never touched a firearm, the ones who bought one out of fear and never learned to use it safely, and the professionals who need documented, defensible training. Coursework covers safe handling and storage, marksmanship fundamentals, defensive pistol, legal use of force, and concealed-carry licensing requirements.

The Gemologist

Dan Ribacoff is a Graduate Gemologist of the Gemological Institute of America. Appraisal work is a natural extension of investigative work — the diamond trade runs on documentation, provenance and trust, and all three are things an investigator is trained to verify rather than accept.

The Author and Television Expert

His book, I, Spy: How to Be Your Own Private Investigator, takes the tradecraft of the profession and hands it to civilians in plain language. On screen, he has served as the polygraph expert and investigative authority for American daytime and primetime television and for British productions, including the relationship-testing format covered by The Sun.

How He Works

• Findings are documented, not asserted — every report is written to survive scrutiny
• Clients speak with Dan or a senior examiner, not a call center
• Confidentiality is structural, not a promise on a website
• If a case cannot be helped by an investigator, he says so on the first call

Public Service

Alongside the practice, Dan Ribacoff served with the Nassau County Auxiliary Police on Long Island — a commitment that shaped both the firearms instruction he now delivers through Delray Firearms Training and the working relationships with local law enforcement that investigative work depends on.

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