Located south of Paris, Essonne brings together technology hubs, residential areas, and agricultural activities. Groupe Hyperion provides its CNAPS-approved 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 with sensitive matters: adultery and divorce, child custody and alimony, abuse of weakness, searches for missing or lost persons, and patrimonial investigations. Our methods combine shadowing, surveillance, and administrative searches to produce solid evidence.
Our Missions for Businesses
We help executives 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.
Areas of Operation
We operate throughout the Essonne department, particularly in Évry-Courcouronnes, Massy, Corbeil-Essonnes, Savigny-sur-Orge, Sainte-Geneviève-des-Bois, Palaiseau, Viry-Châtillon, Athis-Mons, 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 when possible.


