Between Versailles, service sector hubs, and rural areas, Yvelines is a contrasted and dynamic territory. Groupe Hyperion provides its CNAPS-licensed private detectives to individuals and businesses. Each mission aims to collect evidence admissible before civil, labor, or criminal courts, in compliance with the law and privacy.
Our Missions for Individuals
We assist individuals in sensitive matters: adultery and divorce, child custody and alimony, abuse of weakness, searches for missing persons or lost contacts, and patrimonial investigations. Our methods combine shadowing, surveillance, and administrative searches to produce solid evidence.
Our Missions for Businesses
We help managers and HR departments defend their interests: control of abusive sick leave, internal fraud and theft, investigations into unfair competition, employee monitoring, and labor court investigations. All our interventions comply with legal requirements and the code of ethics for private investigators.
Intervention Areas
We operate throughout the Yvelines department, particularly in Versailles, Sartrouville, Mantes-la-Jolie, Saint-Germain-en-Laye, Poissy, Conflans-Sainte-Honorine, Houilles, Trappes, as well as in other municipalities. Our regional network ensures optimal responsiveness and local support.
Method and Compliance
Each mission is prepared with a legal and strategic analysis. We adopt proportionate and traceable means, guaranteeing the admissibility of reports. Our reports detail observations, supported by material evidence where possible.


