Private detective Lyon

The AJT DETECTIVE private detective agency located in Lyon conducts investigations for professionals and individuals. When discretion and confidentiality rhyme with efficiency. Our agencies are accredited by CNAPS and have all the legal authorization to operate. 

We will provide you with the best legal advice to win your procedures and obtain solid arguments in the event of a negotiation. The private detective collects evidence so that you can defend your rights in court. We are bound by professional secrecy and our investigations respect a Code of Ethics with the keywords legality, legitimacy, and morality. 


  • You want to prove infidelity and consider an amicable or fault-based separation. This can have an impact on compensatory, maintenance, and emergency benefits
  • You want to assert your rights in the context of child custody (your spouse does not take care of the child as he or she should, does not respect the schedules, and does not represent the child)
  • You want to find a missing person, a runaway child, a debtor
  • You want to conduct a background investigation on an adult or minor 


  • You want to demonstrate abuse of one of your employees, non-compliance with working conditions
  • You want to prove unfair competition, poaching of staff, parasitism, extorting customers
  • You want to ensure that your premises are secure – We can check for bugs and cameras
  • You would like to verify a CV before hiring
  • You want to prove theft within your company
  • You want evidence concerning your insured in the event of suspicion of insurance fraud  


The cost of an investigation will depend on the time needed, the location, the number of agents and the modus operandi. 

That’s why we need to know the details of your request, in order to give you a precise quote. 


has many agencies in Auvergne-Rhône-Alpes. We can meet at our agencies or come to your convenience (home or company). 

The main cities covered by our private detective agency:

  • Private detective Lyon 
  • Private detective Bron  
  • Private detective Ecully  
  • Private detective Saint Cyr au Mont d’Or 
  •  Private detective Saint Priest  
  • Private detective Vénissieux  
  • Private detective Villeurbanne  
  • Private detective Caluire et Cuire  
  • Private detective Genas  
  • Private detective Tassin la Demi Lune 
Notre agence lyonnaise se situe 3 place Giovanni da Verrazzano à Lyon 9.