Agency under the supervision of the Ministry of the Interior and approved by the CNAPS. School trainer (ASSAS Panthéon, ESARP & IFAR)


Our agency is approved by the Ministry of the Interior and registered with the Paris Police Prefecture


Our agency is managed by Mr. Gérard THOMAS, 50 years of experience as a detective


We respond to all your requests within 24 hours, including evenings and weekends


We obtain the maximum satisfaction rating on Google, Facebook and Yellow Pages reviews

Our private detective services

Notice of adultery

Our team of investigators specializing in divorce cases are at your disposal to provide you with the necessary information to defend your interests in court.

Protection of minors

Drugs, alcoholism, prostitution, gangs: we are here to listen to you!

Search for missing persons

The action of Research Agents proves particularly essential in two cases: Missing minors and presumed runaways. , missing adults...

There are many reasons that could lead you to use our private detective services in Paris. We offer a wide range of services and invite you to contact our agency if you are in one of these cases:

Do you need a certificate of adultery: are you starting divorce proceedings and suspect or accuse your partner of having cheated on you? Our investigators specializing in divorce cases will be able to take over to provide you with all the elements you need. The agency intends to provide evidence of this adultery in order to defend your interests in court.

You have a problem with one of your children: adolescence is a period when many parents are in conflict with their child. The latter can go through a difficult period and fall into many traps such as drugs, alcohol, prostitution or others. If the parent/child relationship is not always based on trust, our private detectives are at your disposal to investigate your child’s actions and provide you with information about their daily life.

Someone close to you has disappeared and you need a private detective in Paris to help you find them? Whether it’s a runaway or an unexplained disappearance, we are qualified to find the necessary information and find that person who is dear to you.

You need an investigation before getting married: you have found your soul mate but you can’t help but have doubts… We investigate your future husband or future wife on request to provide you with all types of information. useful information: infidelity, financial worries, double life… We promise to carry out all the necessary research to give you answers to all your questions.

You are the victim of unfair competition: denigration, parasitism, as well as imitation of a competitor are strictly prohibited and punishable by law. You may need a private investigator to prove this misconduct on the part of one of your competitors.

You need a pre-employment survey: we ensure you will find all the information concerning your future employee: is their CV honest? We carry out the investigation for you.

You need close protection: we provide you with our bodyguards to identify the dangers that threaten you and assess the risks. Trust us to provide you with a high-quality protection service thanks to our know-how and skills.

Professionalism and responsiveness for over 50 years!

The ABAC agency is located in Paris. It is approved by the Ministry of the Interior and registered with the Paris Police Prefecture. Our private detective agency is headed by Mr Gérard Thomas who has been working as a detective for over 50 years. This exceptional experience assures you of professionalism and the guarantee of serious and precise work, and very strong responsiveness to each of your requests. Our service will respond to you within 24 hours, evenings and weekends being no exception. Our satisfaction rating on Google reviews is highest, we invite you to trust us and benefit from our quality services, carried out by our competent experts. We operate in and around Paris.


Our clients are our best lawyers, so don’t listen to us, listen to them!
Consult all our customer reviews on our page dedicated to your testimonials

What the press and TV say about us

Some recent articles or broadcasts about our firm to discover below

They talk about us in the Parisien of December 2020, read here >>

A video report on our Detective firm in Paris to discover here >>

How can we help you ?

The ABAC agency is managed by its founder, Mr. Gérard THOMAS-BRONDEAU, 50 years of experience, former secretary general of the National Council of Private Research Agents.

Approval number issued by the Ministry of the Interior:

Our team is made up of investigation professionals, each of them is specialized in a field and all are ready to invest in defending your rights and safeguarding your interests.

Contact us for further information

We are available every day to answer your questions

Agence ABAC Paris Montparnasse

82, boulevard du Montparnasse
75 014 PARIS

Agence ABAC Nice (cabinet secondaire)

2, place Magenta
06 000 NICE

Agence ABAC Cannes (cabinet secondaire)

5, rue Philibert Delorme
06 400 CANNES

Questions & Answers

Do you have questions about the agency, the profession of private detective or the different services we offer?
Find below our series of questions and answers allowing you to better understand the ins and outs of the private detective profession!

Why use a private detective?

When to Hire a Private Detective: Exploring Their Varied Roles There are several situations where it is necessary or perhaps wise to enlist the services […]

The search for a missing person

Find a missing adult family member and rebuild relationships or handle formalities (such as inheritance). A family relationship with the missing person is absolutely necessary. […]

How to prove adultery?

With new technologies, virtual, real, or semi-virtual adultery has become prevalent as a means to add excitement and deviation from one’s daily routines and habits. […]

What is a finding of adultery?

The divorce certificate marks the termination of the bonds arising from marriage. To obtain it, it is necessary that the divorce has been acknowledged (in […]

Why is adultery forbidden?

Article 212 of the Civil Code stipulates that spouses are obliged to respect and remain faithful to each other; they owe each other assistance and […]