Looking for a private detective in Montpellier? Groupe Hyperion provides discreet support for your personal and professional investigations. As investigation specialists, we provide individuals and businesses with concrete and actionable evidence.
Private detective in Montpellier and Hérault | Groupe Hyperion
Why choose Groupe Hyperion, private detective in Montpellier?
Is your company facing unfair competition? Is false information circulating and damaging your reputation?
Is an employee on sick leave engaging in a parallel activity?
These situations are not trivial and can seriously impact your economic performance.
In Montpellier and throughout Hérault, Groupe Hyperion supports businesses and individuals facing complex situations requiring tangible and legally admissible evidence.
Our strengths:
- Experienced and CNAPS-licensed detectives
- Rapid interventions in Montpellier, Nîmes, and throughout the 34 department
- Reports admissible in court (labor, commercial)
- Strict compliance with confidentiality and the legal framework –
- Media recognition (TF1 report December 2025)
Whether you are a business leader, lawyer, HR manager, or individual, we put our expertise at the service of defending your interests.
Are you looking for a private detective in Montpellier?
Please complete the form below for greater efficiency. We will call you back promptly.
Our services in Montpellier and Nîmes
Groupe Hyperion intervenes in issues common to many companies. Nevertheless, each situation has its own specificities that must be properly understood in order to obtain results quickly and without a major crisis.
Thanks to our experience and the numerous investigations carried out for our clients, we know how to quickly turn away from wrong leads, while valuing every piece of the file to avoid errors and false paths.
With this in mind, we base our collaboration on listening and communication, in order to link your know-how and industry knowledge with the technique and expertise of our investigators. This close relationship between you and us allows us to deliver tailor-made, effective, and relevant solutions.
Intervention areas: Montpellier, Hérault (34), and the Occitanie region
Groupe Hyperion operates in Montpellier and throughout the Hérault department (34). Our licensed private detectives travel quickly to all municipalities in the metropolitan area and beyond.
Montpellier and Metropolitan Area:
We operate in all districts of Montpellier: Antigone, Port Marianne, Beaux-Arts, Écusson, Près d’Arènes, Croix d’Argent, Celleneuve, Mosson, as well as in the municipalities of the metropolitan area such as Castelnau-le-Lez, Lattes, Pérols, Juvignac, Saint-Jean-de-Védas, Grabels, and Clapiers.
Hérault (34):
Our services extend to the entire department: Sète, Béziers, Agde, Frontignan, Lunel, Palavas-les-Flots, Mauguio, Lodève, Pézenas, and Clermont-l’Hérault.
Bordering Gard (30):
We also operate in Nîmes, Alès, Le Grau-du-Roi, Vauvert, and throughout the surrounding region.
Whether you are a company located in the La Lauze business park, in Millénaire, or in the Odysseum district, or an individual residing in the historic center or on the outskirts, our detectives travel discreetly to conduct your investigations.
This practice consists of using fraudulent or unfair means to harm competitors. A private detective will intervene notably in surveillance of the offending competitor, evidence collection, and legal consultation, to provide you with all the necessary elements to act effectively.
This illegal practice, already closely monitored by the authorities, can cause significant financial losses for a company that sees its products (clothing, accessories, or medicines) counterfeited. A private detective can investigate, infiltrate, collect and analyze evidence, and then collaborate effectively with the authorities.
GROUPE HYPERION, private detective network in Montpellier
Founded by Jérémy Fontanille, Groupe Hyperion was established with the aim of providing premium services to businesses. Thanks to our integrity, professionalism, and commitment to you, we have built a solid reputation over the years in the South of France, as well as in Paris or Toulouse and across Europe.
Our ability to combine practical field experience with sharp legal expertise accelerates the resolution of investigations, in order to quickly end the state of crisis in your company. Our well-established international network allows us to offer you perfectly relevant and effective solutions.
“Our mission is to provide investigation solutions of the highest quality, while respecting the values of integrity and confidentiality.”
Jérémy Fontanille – Founder of the Hyperion Group
Case studies handled in Montpellier and Hérault
Fraudulent sick leave documented for TF1
In December 2025, our director Jeremy Fontanille presented a real investigation on the TF1 1 PM News. This investigation conducted in Montpellier concerned an employee on sick leave engaging in an activity incompatible with their declared state.
The evidence collected allowed the employer to assert their rights before the labor court. Discover the full report and behind-the-scenes of this investigation
Unfair competition between Hérault-based companies
An SME in the metropolitan area requested our services to document the actions of a former salesperson violating their non-compete clause. Within a few days, our investigators gathered the necessary evidence to obtain an interim court order.
Learn more about our unfair competition investigations
Employee surveillance and admissible evidence
Since 2023, French case law has been evolving regarding the admissibility of evidence collected by private detectives. Our reports scrupulously respect the criteria of necessity and proportionality established by the Court of Cassation.
Questions asked of a private detective in Montpellier
Yes, Groupe Hyperion operates throughout the Hérault department (34), from Montpellier to Sète, Béziers, Agde, Lunel, or Frontignan. We also cover the bordering municipalities of Gard, notably Nîmes and its region. Our detectives travel discreetly and without delay, regardless of where the mission takes place.
Yes. All our reports are written in strict compliance with the legal framework and current jurisprudential requirements. They are regularly admitted before the Montpellier Labor Court, the Commercial Court, and the Judicial Court. We ensure compliance with the criteria of necessity and proportionality set by the Court of Cassation, so that each element collected is directly usable by your lawyer.
It depends on the nature and complexity of your case. For sick leave surveillance, three to five days are generally sufficient to obtain conclusive findings. For an unfair competition or character investigation, it takes two to three weeks. We always provide a transparent quote before any intervention, with a clear estimate of timelines. Each case is unique, and we adapt our method accordingly.
More information?
Regardless of the sector of activity, a company can face similar problems. The objective of Groupe Hyperion is to prevent these critical situations, notably by improving the internal processes of your company. A security audit is a good way to test the reliability of your methods, for example.
In cases where it is already too late for prevention, Groupe Hyperion can intervene quickly to best protect your interests, in compliance with confidentiality and legislation.
Contact us for a free initial consultation to review your situation and prepare the actions to be taken together.