Your Swiss private investigation agency

Do you need help with the localisation of assets? Are you looking for an external partner for investigative services related to social welfare, since welfare benefits and social case work are nowadays more frequently harbouring risks and potential for abuse? Do you need assistance in optaining information and evidence?

Ever since its foundation in 1995, Privatdetektei Ryffel AG has been investigating before and during legal proceedings.

Our team of private investigators is relentlessly working in order to provide substantial evidence that is admissible in court.

Over the past 20 years we were able to establish ourselves as a professional and quality-aware business in the area of reconnoitring of complex circumstances.

Gladly we would like to illustrate with different case studies how we can assist you with your matter as a private investigation agency.

Corporate clients

Are you suspecting investment fraud or trademark piracy? We establish clarity.



We provide evidence that is substancial and admissible in court, to protect the interests of your clients.



We assist public authorities with investigations of welfare abuse, false declarations or accounting fraud.


Private clients

You suspect something, yet aren't quite sure: about the whereabouts of a person, your money or the honesty of your partner?


Everywhere in Switzerland

We are investigation countrywide. Our private investigators operate and work your case in the cantons Zürich, Zug, Bern, Luzern, Aargau, Genf, St. Gallen und Basel. 

Are you looking for a private detetive in Zürich, Bern or Basel? Contact us. Any initial consultation is free of charge. You can also visit our offices and speak directly to our investigators in Zürich, Zug, and Frauenfeld. If you need investigations in Luzern, St. Gallen, Solothurn or Winterthur, our detective agency is your discrete partner.