Welcome to DETEK AG – The detective agency for business clients and private investigation
You need evidence?
An employee starts a rival company by using your business contacts? A competitor imitates your product? Debtors suddenly disappear? You would like to know the security status of your company? You suspect your stolen car abroad? You were falsely accused in court? A family member has gone missing?
We can help you!
DETEK is available for business investigations, private matters or security questions - discreet, determined, professional.
Looking back on over 100 years of experience, we not only know every trick, but have been able to establish ourselves in many areas. With nine operations centres across Germany and three branch offices in London, Marbella and Zurich, we guarantee short distances and quick contact. Every day more than 100 employees work on the cases entrusted to DETEK – supported by the latest technology.
If you want to tell us about your case,
you are welcome to contact DETEK via phone or e-mail. During our first contact we would like to discuss the best approach for your circumstances with you as well as give you an overview of the costs.
Business investigations
We have more than 100 years of experience with various situations and cases - from billing and insurance fraud, to phoney claims of work disability or violations of competition law. Find out about our principles here.
How much is a detective?
DETEK always charges according to the expenditure of time. But under special circumstances we do offer fixed or performance-based fees. Learn more about our cost structure or contact us for a quote tailored to your case.

Please have a look at our company brochure.
Download: Brochure (pdf, 2,1 mb)
Locations
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Detective Agency Berlin
Unter den Linden 21, 10117 Berlin
+49 (0)30 88 00 199 - 0
detektei-berlin@detek.deDetective Agency Bremen
Flughafenallee 26, 28199 Bremen
+49 (0)421 34 76 0 - 0
detektei-bremen@detek.deDetective Agency Dusseldorf
Stadttor 1, 40219 Düsseldorf
+49 (0)211 86 93 60 - 0
detektei-duesseldorf@detek.de -
Detective Agency Frankfurt am Main
Platz der Einheit 1, 60327 Frankfurt am Main
+49 (0)69 975 77 55
detektei-frankfurt@detek.deDetective Agency Hamburg
Fischertwiete 2, 20095 Hamburg
+49 (0)40 32 32 85
detektei-hamburg@detek.deDetective Agency Hanover
Hohenzollernstraße 52, 30161 Hannover
+49 (0)511 90 96 96 - 0
detektei-hannover@detek.de -
Detective Agency Leipzig
Georgiring 1-3, 04103 Leipzig
+49 (0)341 14 96 91 - 0
detektei-leipzig@detek.deDetective Agency Munich
Maximilianstraße 35, 80539 München
+49 (0)89 38 30 721
detektei-muenchen@detek.deDetective Agency Stuttgart
Königstraße 10c, 70173 Stuttgart
+49 (0)711 90 12 96 - 0
detektei-stuttgart@detek.de -
Detective Agency London
9 Brightfield Road, London SE12 8QE
+44 (0)20 81 44 64 96
detektei-london@detek.deDetective Agency Marbella
Apartado de Correos 2089, 29600 Marbella Las Chapas
+34 (0)636 19 62 89
detektei-marbella@detek.deDetective Agency Zurich
Am Schanzengraben 27, 8002 Zürich
+41 (0)44 586 80 18
detektei-zuerich@detek.de